I believe one of the more important things to have is chemistry amongst the parties involved or potentially to be involved. A one-sided affair is not going to solve anything. Most people have some basic chemistry, few have wonderful chemistry, and fortunately, even fewer have totally no chemistry at all. Generally if your relationship doesn't succeed at least she'll look at you as a friend.
Hence, the pressing issue would be to see if the two of you can 'work together'; as in, just hanging out together without any awkward silent moments.
The way to achieve this is to just think of her as a male friend first. Ignore her damn gender, the reason males find it easier to bond with males, and vice versa, is that they generally do not bother to 'show off'. Basic relationship-psychology states that males subconsciously want to impress the opposite sex (as inferred from animal behavior and primitive man) and so they put alot of stress on themselves. So just get rid of all that pretense and whatnot; think of her as just a friend and get to know her better.
I believe that females generally prefer males who don't have a facade or anything, just the true-blue and sincere you is what matters the most. Good luck!
how to test whether she likes me? But dont ask me wait n see if she will out me out hor..haha..