A cute! Good use of a three-color palette to convey texture/lighting.
Simply! Copy image location, go under Features/Image Specs Tool, paste it and you'll see how many colors are in it, what transparency, number of frames in animations and such things. You can always check your pieces with this tool. 
Btw, semi-transparent pixels are not allowed in pixel graphics.
Thanks for pointing it out 
! How did you notice that though?
It's cute. Though, you have some slightly issues with semi-transparent pixels around the character...
This is a cute little fella! The colors are really nice too.