I thought maybe it was a banana slug. Perhaps you could give it a little bunny nose?
Very cute design, though! It feels like it needs a little extra spicing up, though. Perhaps some sort of background-ness (like stars or a fading color/halftone?)
pretty cool, but maybe look at scale? like it seems a little empty on the shirt. the front bunny could be way bigger and pulled over the planet even, imply that it is in front by overlapping and size. looking forward to developments with this, it's nice.
it was still hard for me to make out what this was til I read the comments...and def didn't see that there were 2 alien bunnies chasing each other...what if you made the other bunny/ship slightly bigger? and what if you drop the red and let the shirt color serve for the dark parts, and then get another color in, like brown, for the bunny. with it being yellow it looks a little like Tweety Bird!! and make him look even more bunny like...i think it's his ears and hairline that don't "read"...good luck!!:)
In space.
Or is it?
In space or underwater?