What I do is go to Pinterest and do a search. Right now it's usually 'samurai' or 'kimono' with more specific terms depending on what I feel like. Since I'm trying to learn new skills I look for images that I like, that have the energy I'm going for, and that I know will challenge me. Usually the process is like... 'I feel like drawing someone in a kimono,' so I search for that, I peruse through a bunch of images, and the one I feel really scared of drawing, but like how it looks, is the one I choose. So, it's my take on what I see in the image. Like training wheels or crutches, hehe :)