My mmf is very stretchy and that makes it hard to put on the cake. If I were to hold it with my hands, the sides would keep drooping/falling until it touched the table. It is also very shiny. I prefer the matte look. I use shortening to grease the table. Is that what makes it shiny?

Crisco does make your MMF shiny. If you don't like it, use powdered sugar or cornstarch but this could dry your fondant out.

If you roll your MMF out thicker (1/4"), then it shouldn't be so stretchy. The thinner, the more stretchy. I always roll it up on my fondant roller and carry it over to the cake and then unroll it directly onto the cake. This way I am never carrying it with my hands. This will also help with the stretching.

I just deliver a cake today with the mmf I thought the cake like alittle mattie I want the shinning look. What can I do different. The client was very happy with the taste of the cake and love the mmf but it was mattie.

The times my MMF has been all stretchy and shiny it's been because I didn't add enough powdered sugar to it when I made it.