A bit of a big one but I was thinking about this the other night (and I talked about this on stream) but I'm not so sure it's explained well through text!
I feel thinking in this sort of matter helps a lot when it comes to pushing shapes. This takes a lot of practice and needs an eye/visual library for this to work effectively. I realized you'd need to know what shapes to use and where/how to divide them.

I tried breaking down one of the drawings I did figuring out how my head works. It's not a 1 for 1 exchange as I do tend to mix construction methods!