I've been trying something a little different in the studio. For my birthday, my dad gave me a new set of acrylics. I know, I'm the luckiest girl ever. So I have been following his painting technique and laying in my paintings in acrylic first, then using oil paint over the top. It's faster because it dries almost instantly and it's a little easier to do tight edges. In the paintings above, the green one is oil on acrylic and the pink one at the other end is just acrylic.
I'm trying acrylic on a bigger piece I'm working on. What's nice is that I can change the composition without having to wait a few days.
I've also been using it to lay in some more complicated compositions.