It is currently impossible to change your Pocket Edition skin currently. Sorry.
unfortunately you cant but you can for PC
You can not change your skin in any version of Minecraft PE. Unless you had a BlockLauncher or Pockettool
No
You can, but other players wont be able to see it. You do it by looking in the minecraft pe files (if you use ios then use soemthing like iexplorer) and replacing char.png with the other char.png of your other skin. REMEMBER: Other players will not be able to see your skin in multiplayer and everybody else will appear your skin to you. So ya it doesnt work too well :P Hopefully mojang adds a skin system for minecraft pe like the computer.
i hope so
Go to your market search for it then click update
Pig.
You have to get access to the minecraft pe files. Like maybe with a program on your computer. Once in the files, find char.png and replace it with your desired skin (make sure its named char.png)! Enjoy your new skin! The problem with doing this is you are the only one who can see the skin you have. Also, everybody will look like your skin to you.
You can use wool for making beds and paintings. I'm not sure about the painting but I know you can make a bed in Minecraft PE
Nametags haven't been added to minecraft pe and they aren't craftable.
Yes. It is possible to crouch in the minecraft pe.
there are no mods in minecraft pe i hope there will be
To change games modes in Minecraft Pocket Edition, go to edit world and tap survival or creative