Focus is loose, and the conceit is a little weak - you could make more of the "me and my little brother" thing - perhaps a bucket and spade? - and the image would be more humorous and hence more interesting. As it is, it's a credible shot of two cameras and some shells, and not a lot more.
Great title! This is a great concept and a few small things would have really helped insure this was is the top 10/ribboned IMHO. First I think reversing it so it reads left to right would help, second the sand(?) at the bottom I find distracting (maybe because of the DOF?) and would crop it off, the last thing is the smuggies to the top/right of the 30D (dirty glass?).