Positive things:
1. Bright colours
2. attractive
3. well designed
Negative things:
1. Too big to be used by me on my desktop, it would make the display look cluttered.
2. After image reduction are these going to look so nice or are items ( like the frog eyes ) going to look disproportionate?
3. They look like images from elsewhere even though they aren't - the instantly familiar look has that double edged sword to it. Instead of thinking "ah yes thats the icon for" you think "where have I seen that before?"