My Very Own Homemade Fondant

So let me tell you about a recent passion of mine...

Cupcake decorating! I haven't done much yet, but I'm absolutely interested in learning more. Here's my most recent cupcake creation (and to be honest, I made this one in a cupcake decorating class at my church...hey, ya gotta start somewhere, right?)
I thought it was okay for a beginner! But I really want to make some special cupcakes for Luke's 25th birthday party that I'm planning, and for the Mother's Day cookout that I want to have. I want to make some like these from Martha Stewart's website:
Those look pretty simple, and I'm not too worried about making them. However, on my quest for these cupcakes I found LOTS of other cute ones online. A lot of them used fondant.

I'm a little under the weather tonight, and hubby was out picking up dinner poor little sick me didn't have to cook (what a sweetheart he can be sometimes!), and I was bored. I wanted to create something. With cupcakes on the brain, I remember a lady at our cupcake seminar telling us that she made her own fondant-like-substance out of powdered sugar and marshmallows melted in the microwave. I had both of those things in my cabinets, so I decided to pass the time by making my own fondant-substitute. Since I'm so into cakes and cupcakes these days.

So I tried. It didn't come out completely perfectly. A little lumpy, and not quite as stretchy as fondant. I'll have to try it again sometime, I'm sure if I spent more than 3 minutes working with it I can make a better texture!

I had to sculpt SOMETHING with my sub-par fondant-substitute. I just had to try it out, even if it didn't turn out as great as I had wanted it to. So I used some food coloring and whipped up this less-than-lovely rose. This picture looks nothing like the actual rose I made, because my camera sucks :-P You get the idea, though.
Ehh, it's okay, I guess. I'm going to have to perfect this stuff before I try to use it on any actual cupcakes, though, that's for sure! I must say, it did TASTE a lot better than fondant. How could marshmallow and powdered sugar taste bad?!

If you have heard of this fondant-substitute, or have any suggestions on how I could perfect it, please share! I would love for this to work out, and then I could make incredible creations to place atop my cupcakes, without paying for real fondant!