To the cake pro's - help with my icing plz!

yeah, as i said, don't use cornflower, use crisco and very liberally- all over your rolling pin, your hands, and your rolling surface. it will give your fondant a slight bit of sheen but thats not a negative thing, imho :)

pink and white marshmallows are fine but the fondant will have a pink tinge to it, so just be aware of that. you could always pick out just the white marshmallows but that might be a pain. marshmallow fondant is super easy to make and tastes good too. but again, you MUST crisco everything otherwise it will be dry and will not roll out properly. i wish i could show you a tutorial or come help you in person! are you in toronto or somewhere around here? cos i seriously will come over and help you!

i've only ever used marshmallow fondant as i find store bought fondant to be really pricey.