1. Remove CPU
2. Set area aside with newspaper just in case
3. DISCHARGE STATIC ELECTRICITY FROM BODY BY TOUCHING A GROUNDED METAL SURFACE
4. Using (1) coffee filter, dunk it in preferably 99% isopropyl alcohol
5. Wipe CPU until all thermal paste is gone
Put #3 at the top of the list, and add it between every step. Kinda pointless to discharge static after you've already removed and handled (and possibly already killed) the processor.