Haha, no... no secret message in this one. The cryptopixel project is kind of on indefinite hold, due to lack of interest... even the "easy" ones (like the coffee puzzle) are too hard for most people, so it'd be a hard project to build a real community around.

Saw your name and instinctively started looking for secret messages!

 Yeah, it's two people on a bench. In the original photo, the seat and backrest take up approximately equal amount of space, but that's because the back is sloped a bit. But of course, since most people won't have seen the photo, it's not about what's really there, but about what looks right - I'll consider lowering it.

As for adding an extra colour, I agree that it would help make things clearer, but that's not what I'm shooting for... if anything, I feel like it has too much detail now - I think my next piece will be smaller.

I'm pretty sure it's two people sitting on a bench from an almost over-head perspective. It looks like a bit too much of the backrest on the bench is showing for the perspective to be believeable.

Are they fighting or dancing? Nice, but too much black which blends characters into background - background or characters should be lighter to stand out. Pick one additional color for this purpose.