My ideal woman is a girl with an imagination, a big heart, and an open mind. I'm a nerdy artist (I design toys for my day job), and as such drawing cute characters and looking at the whimsical side of life is a fundamental part of who I am. Because of that, I'd need a woman who was receptive to creativity and could use her imagination, and wouldn't mind if I drew her as a cute mermaid or fairy or something similarly adorable.
The second thing that makes me swoon is a girl with an enormous heart. If I meet a girl who is nice and kind and sweet-as-can-be, I just melt. I just have a thing for women who are genuinely kind and loving to others.
I'm also a self-described nerd-- I enjoy pop culture, games, toy collecting, music, and a whole range of varied interests; I'd like a woman who was open-minded and comfortable with those topics. In a perfect world she would also be a nerd and have her own nerdy interests (I love to date nerds, most of girlfriends have been nerdettes). I also love to bake, so my ideal girl would have a sweet tooth, haha.
I'm also a romantic and sentimental person. My ideal partner would be someone who was likewise romantic and in touch with her emotions.
In terms of physical appearance, I don't know that I have a specific body type I prefer, as (and I honestly mean this) I find all the different body types of women attractive. Short girls, tall girls, thin girls, curvy/chubby girls, all are sexy for their own different reasons to me. I've noticed some people have a racial preference, but I don't necessarily have one myself. I'm white, and while I have only dated white women so far in my life, I would happily date a girl that was a different ethnicity if I felt she were the right 'fit' for me. Unrelated note-- I will state that I do have a terrible weakness for women who are brunettes. Black hair and brown hair is very cute to me, and good lord do I love a girl with glasses! A cute artsy hair cut is sexy to me as well.
TL;DR-- I hope to meet a woman who is kind, smart, nerdy, open-minded, creative (or receptive to creativity) and is a total sweetheart to boot.