How to Masturbate in Doggy Position

I want to get a little bit more into the logistics of actually masturbating. I think the biggest hold up for me is position because I'm just not sure what the best way to get there is. And then I start to get very self-conscious about how I look doing that, which is silly but still doesn't feel like the sexiest position. What comes to my head right away? Very touched and very palyo. Well, so what are your favorite positions for anal masturbation?