I have finally found a great solution for those tough angles.
1. Stick my phone into my Gorillapod tripod.
2. Launch Camera+ on my phone, switch to the front camera, turn on its timer mode, and set that to repeat.
3. Put the tripod on something. Probably the 15″ tall bong that lives on my desk.
4. Grab stand-ins needed for any props, and pose!
5. Move the photos to the computer by dumping them into Evernote and forcing a sync; bring ’em into my work in progress and start drawing.