your arts really nioc. your too underapreciated.

ha ha you been on my forum before 

the two with the universe in the background ruin it, the subject is great
and in the colored one I am not sure if its the quality you export in but the subject
in the portrait look like subject was in bad lighting or under expose.

by the way colors it big part of getting people to view you should think about that.

great job
only thing is right where the font legs i wold make the back buffer or big
but that just me really its great keep it up 

if u are trying to be a cartoonist I do not see anything wrong
you might want to work on your coloring a little bit   

great work get a pen tablet and go to town.
it does seem like you need to be inspired or something  I would suggest if you want to get better don't wait until you want to
draw find character you like draw that, draw a character every day or every three not every two weeks this will help you.