Of all the pics I've seen of Yami, I'm curious what makes him a "he." All of the features, colors, clothes, and even poses suggest extreme femininity... Sorry if people ask you this too often, but it just doesn't seem to fit.
I suppose all I can say is that most BJD boys are just extremely feminine He has a feminine face, his body is not muscular at all, which makes it feminine-ish as well, and yes, the hair doesn't help either I don't think anything I would try with him would make him less feminine.
I can see that, then. If you wanted to try to make him less feminine--as an experiment, or a potentially different side of him--I think I would start at the clothes, then change the make-up a bit, and finish with trying some less feminine poses. Obviously, I'm not suggesting anything you can't undo, but if it's something you have an interest in exploring, those are the angles I believe would be the most natural and easiest to start with. He is an exquisite doll, so I think it would be exciting to see that other side of him.
As a side note, I sincerely hope you don't take any of this as me saying he isn't okay how he is, because that is not my intent at all. I just find that artists do their best work when they explore as much as they can with what create.
I noticed that this picture was also in your folder ``personal favorite```... So i thought i will make you a suprise ( sice i am allready a big fan of Yami )... A picture but i still need time to upload it -.-