I've had an androgynous look on and off for years and surprisingly I can't think of much advice to give! I think one thing that goes a long way to femme up your appearance is taking care of your skin. Wash and moisturize you face daily. Staying very clean shaven helps of course too. As far as clothing goes, I always like kinda gender neutral looking stuff; guys jeans that have a similar wash to girls jeans, ect. You can always add in some light eye makeup too if you wanted. I sometimes do a very slight bit of eyeliner if I'm feeling spunky.
I'm not sure I started being kinda androgynous intentionally, just started to select clothes that I liked, which usually are a little more femme I guess.
I think the best description of my style/look or whatever would be "Tomboy" It seems to bother some people, but that can be entertaining at times.
