OK...where did I mess up?

last week I worked on a dock (Big Orange Docks located here WWW Link ) and submitted them for moderation. Granted, I have not made many docks, nor have I been at the process for long, and also grated there are dock artists out there who make awesome stuff that make mine look like simple stick figures, but all the docks I've submitted before have AT LEAST gotten a decent rating or "way to give it the old college try" comment. The docks linked to above, however...got a 1 star rating and no comments over the weekend. I actually thought this was my best set of docks yet. I'm not complaining about the rating, or the lack of comments...just wondering what I did wrong or what I could do to improve. I really enjoy creating docks...and wanna improve...all suggestions, hints, tips and constructive criticism accepted with a smile.