That really does depend and varies wildly. I know several men smaller than woman (No, not in the weight department), and I know some women who are beautiful but definitely more 'masculine' than the typical image. It's not that I don't appreciate the gender bender changes, it just kinda irks me that they ALWAYS wind up becoming tiny and petite.
That's gonna be a problem. You could learn a 3D modeling program, but I don't think you can get good at animating without the observational skills needed to draw things. You'd certainly have problems creating your own characters.
Plus, to separate the urinary from the reproductive system, your urethra would have to "rip" through your prostate, which would itself proceed to squeeze between your bladder and rectum and pull your testicles over your pubic symphysis (that rigid front of your pelvis) so that they could morph into the uterus and ovaries at the top. Then, just when you think it's over... RIP! Right through your corpus spongiosum! As Bane would say, "It would be... extremely painful."