I totally thought that the cat was going to be the PC in this game. I’m a touch crestfallen.
Camera-wise, I feel like the Cave Story camera is very instructive. It’s okay for the character to approach a screen’s edge, but then I like to have the camera accelerate forward, center ahead of the character, to provide a view of where the player is heading.
I could offer some pixel art advice. If I can set up my desk and mouse I could probably get into GIMP and play with some frames to see if I can tweak a few sprites but don’t expect much because I’m stupendously lazy.
Your candy corn, at the moment, looks a lot like a fat lipstick. Part of it is the desaturated colors, but I think a large part of it is the vaguely bullet shape that comes from that very thick, single row of pixels second from the bottom. Maybe fatten that part up vertically a bit in the upwards direction so that there are more rows of that uniformity of thickness.
It would also read a bit better if you slim down the top row of white pixels. As it is, the size transitions are divided up too much along color boundaries.