Out of curiosity. When you write games for DS, what language to you write them in?
The game engine is in C++, and i'm using my own ugly scripts for behaviours, events and things alike (drawing inspiration from how Eric Chahi programmed Another World). Most people prefer to stick to C and use 'PALib', a wrapper around the hardware that makes the DS easy to use even for newbies in C (that still have good background in e.g. VB or similar languages).
The outline is very dark and is inconsistent with the rest of the piece. For example, the grass does not have a dark outline. Also, the hole in the rock is much brighter than this outline.
okay. I'll work on that.
It does look a bit...anti-gravityish[?] in my opinion...I think it would look better if it looked more "solid" to the ground.
would something like this do it better ->

(about the mouth) Think about adding one to make the character more identifiable.
Well, i have to add that the character's programming isn't complete (e.g. sub-sprites for feet and hands aren't there yet). The complete character looks right like the blue ball on my avatar. Does it make it more identifiable or does that one still need a mouth anyway ?