It looks pretty nice especially, when I read that it is your 2nd digital piece. But I see that you are making some beginner mistakes. You are jumping into using textures, without knowing what to do. I would suggest you that you should try to paint textures yourself, after you got the values and forms down. Adding textures to an artwork is one of the last steps. You need to have finished the forms or else textures will look strange, because forms defined textures, too.
I think it is good, that you don't try to smudge the colours. You use hard brushs. That's a good start. What kind of program are you using? Is it PS, SAI or GIMP? If it is one of these, you should try to experiment with tablet pressure and the opacity of your brush. Also, don't be afraid to use more contrasts, especially when shading. And you should take a look into colour theory. Shadows aren't just a darker hue of the main colours. Mostly, dependent on the light source, shadows have a blueish hue.
It is a pretty good start and if you continue like this plus doing a lot of experiments, than you will get better soon.
I am using GIMP. However I don't have a tablet I use my mouse. I usually do traditional but when I enter a contest I have found traditional never gets pick so I am trying my hand at digital. Thank you so much for the tips. I'll keep working at it.