Good Job.You are halfway there.Now,take a wet wipe and wipe the thermal paste off the CPU

If there is Thermal Paste around the CPU,take a toothpick and scrape off the Thermal Paste.Be careful to not destroy a fuse

Dont take a napkin or a cloth and wet it with water.Otherwise,your laptop will be waterlocked (Defective maybe beyond repair).Use a wet wipe like I use in picture 2