The sprites are cute and the controls feel snappy. The placement of the collectables annoyed me a little, since most of the time the negative ones were placed right in front of a gap, which meant you either had to do a frame-perfect jump (if it worked at all) or just eat it and hope you're not slowed down too much. There also was no real progression in terms of ability or difficulty, which makes an infinite game get boring very quickly, so that would be one aspect to work on if you decide to develop this game further.
Good work, keep at it!