Apocolypse I think you should try making a track of the Victoria falls, or something like that with a lot of vegetation. It is harder to detail than most things, but you could just go for simple, clean lines and a whole lot of it. Another specific recommendation I have is to draw some famous building/painting. Again, hard, but worth it in the end.
unless my mom turns off our internet for the day, (which she does) I hope to complete this soon! btw, this is the layout of it ;D