Posters...?

Okay, so here's five poster ideas I've come up with. Keep in mind I've never made a poster in Think and Make before, so feel free to tell me if I'm doing it all wrong.

Models Are Evil

Okay, so we were supposed to build a model treehouse, along with a tree to stick it on. All perfectly realistic and helpful assignments... When you have a square house. But mine is 3 cylinders, and proved SO hard to make, even out of paper. I tried paper, balsa, plastic containers, then paper again. On my 5th try, I got something that looked similar to my concept sketches, but I still think I'm going to do more computer drawing to get the look just right.