The head skin is called "head texture" or "custom head texture".
Things you need to change your head texture:
1) Head texture item. You need it before you can change your head skin and it costs 2000 tc. you can buy it right
here. It will let you to change your head texture ("skin").
2) Once you have the head texture item, you will need an art file. Open MS paint, draw something in it and save it as a ".JPG" file. Then go to the head texture item which is in your "Deactivated" inventory. Click "edit" and upload the art file you made in paint by clicking "browse".
To put the new head on, click on "activate" and it will appear ingame soon.
Here is a guide about creating cool and awesome looking head textures.
PM me if you didn't understand something. Cheers.
[e]: Solved.
Last edited by Hero; Jun 18, 2012 at 10:43 PM.