Well, I have several questions which I would be like that anyone of you answers me

Now, on stuff:
1) How can I change skin(texture) of a model without using any XX_set_user_model, coz it wouldn't work.
2) How to spawn a sprite on players position?
3) How can I change sprite when a function is called? So when I press, let's say, command to change health then it changes sprite of something.
4) How can I make that function can only be called if 2 players are standing close to each other ( looking into their faces )?
5) How can I force some player to be a spectator?
6) How I can change model with FakeMeta?
Thanks in advance!!!
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