I need help getting my MMF stiffer, to make things out of it. It seems if it's dry it's cracking, and just dry. If I add crisco to it, it just gets so soft. Also when I roll it into a ball it seems to get wrinkles in it or cracks. it wont roll smooth. HELP
you could try using half gumpaste and half mmf
also maybe you are not kneading it enough
When you roll it into a ball and it as cracks in it chances are high that you will still have them when you roll it out. You have to have a smooth ball to start with. You want to roll the fondant into a ball in between the palms of your hands (warmest area) slight cup your hands. Don't do it on your fingers.
To make your fondant stiffer to make figures/flowers etc you can add tylose powder or if you cannot get that then you could use gumtex (made by Wilton and available at most craft stores that carry Wilton supplies). I personally like tylose powder plus it is white so my paste is always very white. The other thing you can do is make a 50/50 mix of fondant/gp as Madge suggested.
Here's a link for how to make modeling sugar by aine2:
Try popping it into the fridge for ten minutes. It always works for me.
If you're using the really simple MMF recipe: 2lbs ps, 1lb mm, 2 tbsp water, you might need to add a bit more water. I always add 1/4 cup water instead and end up with the perfect consistency.
xstitcher is right about the tylose. The other good thing about tylose is that it doesn't stink the way gum-tex does. With either one, just knead it into the fondant until it stiffens up.