I do like the colours, but the overall presentation is not that great - the background looks too much like empty space, and I think it would have looked better with the muffins in the foreground being closer to those in the background, so they would be more in focus. Also, the muffins don't look very interesting - it would have been nice to see some better decorations on the muffins themselves or the wrappers, and maybe some fancy icing. It does look pretty just the same though.
Ah ok! Oh, by the way, do you do critiques or redlines? I'm trying to improve and right now I'm not very good at drawing. There are some techniques I know about and such, but it can be hard employing them XD