Eagle1, yes you can detect blockages on yourself. In fact when you start doing the level III material it is suggested you do it everyday after your morning meditation. If you like you can use the level II techniques on your image in the mirror.
As for the virtual compass, consider how you ask for guidance. There are a few threads on this topic and it might be good to find them and see if anything helps you.
If your are looking for the best direction, as opposed to the best place, you could just ask "What is the best direction for me to be facing while doing my meditations?". I like to add a desired outcome for my meditations, like "What is the best direction for me to be facing while doing my meditations to... heal my hip, or improve my eyesight, or help my family, or... "
Once you make the request, don't go looking for the guidance, don't anticipate how you will receive it. Just join with the universe (go into the emptiness) and you will receive your guidance. Take it accept it, don't analyze it, don't question it, and be grateful.
You are prefection.
Iam2 
