The best way to get out of the friend zone is to start escalating sexually and subtly, while acting normal. This will build sexual tension, between you two.
For example, you walk by her, give her a little tap on the ass without even caring! If she says: " Why did you just tap my ass?" find something funny to say, its often a shit-test. You can say: " What ass?...white girl

" or " look stop talking about your ass, i have to talk to you about something...(you change subject abruptly)" or "you had a fly on your pants, it's alright, it's gone now, by the way (change subjects)"
An other way to sexually escalate is too talk about sex in front of her, you can also kino her alot. When you talk to her, play with her body, start gently kicking her feet, grab her hand and swing them around, you can even approach your crouch to her pelvis area.
These subtles moves will build sexual tension and with the right attitude get you out of the friend zone