I'm using game draw in unity and wish to make my own uv mapping textures how do i do it ?

you can use the UV editor in GameDraw either open it from GameDraw’s menu or from the UV tab and in it you can unwrap your UV and edit it, then save the UV map so you can work on your texture.

Another option in GameDraw is the ability to do planar, cubic and spherical mapping from the UV tab.