Here's something I put together after a figure drawing session.
I hope you can get some insights about it, especially in the department of "what do I work on first?". Painting from life, even a photo, can be overwhelming. There's so much going on, there's subject, there's background-- in what order do you tackle them?
I'm always trying out new processes, so it's not always the way I work, but I think it's a logical way.