I really think you should go back and finish the other pieces you started before working on all these new ones.
I agree with Obsidian. I know how it can be disheartening to have your pieces critiqued alot, with people telling you to do the whole thing over, etc. But they are just trying to help you improve your skill, which I'm sure you want, right? Whenever people give you critiques, don't just start a new piece, which you claim will be better, and have better technique to it. Just keep working on the original piece, applying the things people have told you. Trust me, if you just keep working at one piece, finish it, and
then move on to another, you will gain much more skill. This doesn't just apply for pixel-art either, it works for sports, musicianship, inventing, etc. So you
can follow this philosophy: If at first you don't succeed, try, try again. Just try again on the same piece.
