Ok very simple.. The silver ring at the bottom of the shift knob holds it on. You need to use a small screw driver to push downward on the ring. (you may want to fold a rag or something on the shift plate incase you slip off, you don't want to scratch anything.) Once you release the ring the shift knob will lift right off.
2011 Challenger 392 Billet w/gray stripes
Mods: Lockpick v4 w/Back Up Camera,BT Door Sills,BT SRT Sunvisor Plates,Mopar T Handle Shifter,BT Catch Can,SRT8 Door Badge Plates,E-Brake Cover,MBRP 3" Exhaust,K&N Drop In Filter,BT Under Hood "392" Kit in Satin