1.no it wont fall off. its the most sticky thing since Sticky the stick insect got stuck on a sticky bun (blackadder quote)
2.a) simply shape it with whatever tools you have untill it get into the right shape - practice makes perfect... B) No. most of the tools are not expensive and not always entirely neccissary. Good tools are simply an aid IMO
3. practice makes perfect
4.yes to the power of infinity
heres a picture of my tools:
both are nails, hammered flat
the one on the right is my slicing/flat/detail one - sharp enough to draw blood! really good for micro details
the on on the left i use for scale mail and faces
i hope this helps