Gabby it sounds like you're doing swell.

Detect the blockages and work on them where ever you find them. Don't question it. Just work on them.
You mentioned the head, and yes scan the head but do the whole body. Just don't be biased by your preconceptions. My personal feelings say to work on the heart for these types of problems, but that may be my bias. I comfort myself with Master Lin's words that once the energy gets in it will find it's way to the right place. This helps me to be more confident and reminds me to focus on the what (results) and not the how. However, if you get direction on how to do you SFQ follow it confidently knowing it is the best way to get the pure energy in. 
You are perfection.
Iam2 