Decided to try something new today.
#1 I thought I'd draw something using photo reference.
#2 I decided to get super basic with my tools. Just a hard round brush.
Here's the photo ref I decided to use;

The photoshop file is attached. Take a chance to dig through it. I didn't delete any layers and I only merged the later once towards the end, so you'll get a pretty good idea on how i drew the above image.