HOW TO CHANGE YOUR SKIN ON TECHNICLAUCHER TEKKIT CRACKED
Open "RUN"
Type in: %appdata%
Go on ".techniclauncher"
Click on "tekkit"
Open "bin"
Open "minecraft.jar" (with WinRAR)
Go in "mob" file
Replace "char.png" with new skin (that you will rename "char.png")
I hope this helps my friend.