Wonderful idea ... like the old woman in the shoe!

Just a few suggestions; it could use a little clean up in the cutting especially in the sky area and ,although I kind of like the effect the dark edging around the shell makes, it does look a bit like it is sinking into the clouds. Also possibly a shadow for the open window?

Arca: That was exactly what I was aiming for
I wanted the shell to pop out, against the dark background. (I actually pen tooled the shell then added an outer glow :O

Thanks for pointing out the window's shadow

I wondered if that is what you were going for ...it does create an interesting look ... window looks great

i like it ,good luck

Very nice work author...good luck

good imagination, black color around the shell can be removed

Magic shell-boat