Hey dude :P (you know me)
From what it looks like and what you've said, your drawing style is somewhat unstructured and mostly colored in scans. While in this case that is certainly not a bad thing, as some of your later work (particularly that Heracross) is quite good, it may be beneficial to you to learn how to be more... Organized? ...with your digital art, i.e. take a course, read articles, etc. The one tool I recommend you learn how to use is the mixer brush in Photoshop. Your work already has a nice, soft, feel to it, and the use of the mixer brush, which, well, mixes colors, may strengthen that even more. However, don't let this comment ruin your work. Sometimes, the style of separate strokes is good enough by itself.