awww what adorable little creatures of bunny and cats you have here. I love the use of pink pixels for their bodies and the squinty eye looks they have on their faces. The overall look is good for pixels and I can see why you are showing all three in one image with a white background, but maybe next time move them around and make a full setting with a background and some interaction between creatures. I love it for the design, but wish it had more going on.
~~THINGS TO IMPROVE ON~~
As stated above, mainly a background