Ah, we're alike as I thought! I've gotten a tutor to prepare me for the exams I have to go through to get in the Fine Arts School.
I see, you need the figure to be in front of you. I face the same problem, but my family tells me that it is normal, for an artist to... not be able to draw his own stuff early on, but as the time passes and you get more experience, observe the figures, the shades and the tones, the more natural it comes to you, until you finally become skilled at progressing with your own (now ready) imagination. Might be our imagination is a gun, but it needs bullets in order to be fired.