Backyard Warm-Up

My painting teacher told us we should do 20 minute drawings with lots of "energy" before we do any painting. I'm not completely sure how to tell if a drawing has "energy" but I thought some of these turned out pretty well for 20 minutes, especially the one with the pool.



That last one is also almost the same view as a previous ink drawing I did.

Anyway, what do you think? Energy or no?

~Adam