Still I think I'm missing something. Like, concept. I don't know....
Anyway, for you, I'd recommend learning the principles of perspective first. It's VERY essential. Once you have that right you'll be able to give a sense of distance, depth to your drawing. To make it look more interesting. If done well you will be able to convince your viewers that what they're looking at isn't just a picture of a person/character but an actual scenery.
You have talent but you need to take your work to the next level. Some good comments here and I agree with a lot of them. Colour isn't the most important thing, if you like pencil stick with it. You do need more contrast and shading in your work though to make it pop more. Also a lot of your drawings look more like sketches than finished pieces. I can see sketch marks, rough pencil squiggles, etc. around them. Try taking one piece and running with it as far as you can. Don't leave marks and artifacts, and use lots of different shades and white highlights instead of just outlines and a few shades. Someone else mentioned using perspective. This is VERY important. Try doing your next piece on an angle, or have your characters viewed from a bird's eye view, or worm's eye view, have one character in the foreground and another in the distance, etc., etc. Yep it's hard, but with practice it'll get easier. Good luck!
It's probably looking bland to you because you draw in pencil and don't really do much with it like shading etc and all your lines are really uniform from what I see. You're art is cute but right now it doesn't really 'jump'.
Another idea would be is to look at your favorite artists (classical or contemporary) and ask yourself what is it about their work you like so much. Is it because of realism, their messages in their work, use of colors, use of lines, subjects, strange/exaggeration/surreal, etc.
This should help you on taking some of their ideas and using them on your own art. If you are feeling discourage and it is doing the opposite then stay away from the internet for awhile. Don't try to compare yourself to other artists. There will always be somebody better out there (from your opinion on what is considered better) and so try to not be so negative.
Draw for fun about whatever. It is also okay to not upload everything you draw and not every drawing has to be a finished piece. Not sure if you have this is a problem but I have this problem and I'm slowly overcoming it.
First of all: You should be the most important person for now, who judges if your artwork is interesting or not. You aren't a professional, which means you don't need to draw for money. So don't put too much pressure on you, when you come across one or more person, who think that your work is boring. It can be frustrating, of course, but you will never be able to satisfy everyone!
I've taken a look into your gallery. Well, I see that you like to draw humans and that you try to tell the audience something with your characters, but the context is missing. You can see the relationship between the characters, but where are they? What are they exactly doing and when? Why? Most works are interesting, if they can tell a story. So don't be afraid to make up a context, which means use backgrounds, but don't seperatly of background and the main focus of your drawings! Everything belongs together!
Colour. Well, colour attracts the viewer. That's true. So it can make a drawing more interesting, but it can mess up everything as well. Don't be afraid of using colours, but also try to experiment and observe your surrounding. Try to learn how to use values. The best way for this is using only one colour or the normal pencil. Value and colour go hand in hand. It's a huge topic, but it is also interesting and exciting to explore!
Try out more advanced poses and use perspective. This can be hard, but it can make an artwork more interesting.
And of course: Experiment, experiment, experiment. Like Cnids said before: Draw weird shit! Everything out of the normal has the potential to be interesting, because it isn't normal. It's something unknown and that draws the attention to the artwork.
I wouldn't say it has to have color, but at least something needs to fill the page. Values are more important mostly then colors, since colors derive from light. There are plenty of good Black and white photos that don't have to have color. Represent old age, and things like that. Even frankenweenie, does not have any color.
I would never say that colour is the most important thing. I also said that you can mess up things with colour very well. I've seen awesome artworks, which where drawn only with the pencil. They moved me more than a fully coloured artwork. It depends on the knowledge you posess, etc. and how you let it show in your work. But it's true, that coloured works tend to attract the viewer more. I don't know why, but it really seems like that.
If you've got something unique that you do, it makes you stand out from the crowd. I have a lot of artists on my watchlist who may not be the most technically skilled, but have something unique or different about their subject matter/style that makes them memorable. Your work looks very similar to a number of other artists (it immediately reminded me of ~IceHandTitan who I knew IRL) so it just kind of gets lost in the shuffle.
Find out what kind of "different" things you enjoy (and surely you enjoy something unique!) or different ways of rendering things, and experiment. Don't be afraid to go a bit outside your comfort zone and try new things. Even if you fail spectacularly, you'll at least have learned from the experience.
"How do you make your art interesting and intriguing?"
By going above and beyond. You know all those challenges you're avoiding because they're hard and you don't know whether they'll work out and you'll have wasted all that time for a picture that doesn't even look good? Those? Yeah, those are where the intrigue is hiding. Challenge yourself once in a while. Most of the time you'll make some really awful looking art, but it's not a waste of time, it's a difficult path to some good-looking art.
You don't need to challenge yourself every time but if you never do then you won't ever get anything really interesting.
well this is an easy one, i actually do fully-colored works and not just sketches...
your work would look more interesting if you colored it and put in a background (whether the background is random colorful patterns, or actual scenery like a forest or a city street, any background is better than blank white space. blank white backgrounds are boring should not be used often)
i don't mean to say that you shouldn't sketch. sketching is good! but do more works that are actually finished.
coloring is a lot of fun because there are MANY different ways to do it! (and many tools to use) find the ways that suit you best. color doesn't automatically make a pic interesting, but if you color more often, you will get BETTER at it and THEN your work will look more interesting!!