Spent 30 minutes on this one again. This process has definitely been illuminating my limitations, and showing me exactly what I can do in 30 minutes. On this one, I started using the oil paint brush in Manga Studio and moved on to using a simple round brush to do more details. I'm trying to limit my brushes, since I'm only giving myself 30 minutes. Maybe the further along I get, I will get more of a feel for what certain concept brushes can do.
By the way, if anyone wants to see the source images I'm using for these paintings, check out the Facebook group Daily Drawing Challenge. The group is open to anyone of any skill level and was started by an old professor of mine at SCAD.