Save up some TC and items. It doesn't have to be a lot of TC or items, it can even pay the people 2,000 TC for a head. Then go here: http://forum.toribash.com/forumdisplay.php?f=32
Also, don't try using other heads people made, unless you bought them or used with permission. You can get infracted and banned for using other people's textures.
Here are some free head texture threads, just do not sell them or give them away saying that you made them or they are yours.
http://forum.toribash.com/showthread.php?t=114379 - Great heads
http://forum.toribash.com/showthread.php?t=466 - Old, outdated, not the best.
http://forums.toribash.com/showthrea...highlight=free - Great heads by Vox.