"I'm sure Ms. MovieStar would be flattered that you're honoring her this way. The hard work you've put into this shows. What you have here is good and does resemble her. I could tell without being "told" who she is. However, her lips are fuller than that and her cheekbones not quite as high- and I could swear she doesn't have a bump on her nose. Instead of trying to correct this, it may be easier to start over. I know that means all your hard work would be for nothing then, but there are times starting over with a "clean slate" is better. You may find it easier too, since you've already gotten so much of it worked out and may not have to work quite as hard on a new, improved version.
P.S. Your hard work wouldn't really be "for nothing" if you were to start over. You'll know what worked and what didn't work this time and will know how and what to improve if you start over."
Er- that was harder than I thought it would be. Feel free to copy, paste and edit as needed.