If I'm not as good as someone else at designing the layout, but I'm better at actually mapping it, it makes sense to work collaboratively.
I agree.
If you want to finish any of my maps, feel free. I'd be happy to provide plenty of reference pics/descriptions upon request.
Most of them have the source provided, except one--The Pink--that I'm having trouble updating in the vault, for some reason.
I get started on a project with tons of energy for the inital design, then lose the focus and motivation to complete it.