Painting sketches.

Long time no see!

It was a very intense month but finally I'm back and I bring a lot of new stuff!
I made a series of sketches based on the photos I took of every day life at school. I use acrylic paint on paper. It's a very quick technique so usually I paint one sketch like this at once.
Also three 20 minute sketches of a model in act.

I'm open for your comments and critique :)