I have seen a few variations on how to make the 3D head for the spiderman bust cake. Some make it out of paper mache, some out of rise crispies and some from a dummy. which one would be more easier? Some people who make it out of rice crispies seem to be able to mould it into shape while still wet but I know that the rice will stick to your hands and it will be impossible to mould into a head shape. Is there anyone who has tried these methods ans any tips that you could give me?

I've used RKT but for something very simple.I put some crisco on my hands so that it wouldn't stick but maybe you should wait for some other answers...

I also use crisco on hands to keep it from sticking- also if it's too sticky- add more krispies to balance out the ratio.