Ok, so:
1. Those blue outlines just bother me, and I see a lot of other people as well. Maybe you could change them to black.
2. IT is... too monotone. Maybe add some patterns and it'll be alright.
3. Raise the contrast. Believe me. It'll be better.
Bottom line: I would rate it 3/5. Remove the blue outlines that ruin it (IMO), and add contrast.