Alright. In the future, can you answer each question separately, even if they seem the same. Even if you are familiar with the answer, looking again can only deepen.
So let's take a look at the sense of self:
Yes: in the head. There is a sensation of a point of view/perspective/an angle from which things are seen. There is also a sense of distance from the sense organs.
There is an assumption here that a point of view/perspective means there is a self. But even after the separate self is seen through, there will be a perspective.
Now...
When there is a sense of self, separate it into the senses that are involved, and inquire into each sense.
For example, let's say I feel a sense of self behind the eyes, and there's a thought 'this is me'. I would inquire:
Sense of self behind the eyes = sensation = are these sensations the self?
Thought 'this is me' = thought = is this thought the self?
Image of self behind the eyes = thought = is this image the self?
Objections will likely rise up. If so, keep inquiring into those, such as 'Of course there is a self, I'm right here'.
Thought 'Of course there is a self, I'm right here' = thought = is that thought the self?
Then maybe there's a feeling/contraction in the chest, so you inquire into that. Are those sensations the self? Where is it?
If you end up in a quiet place, rest there. Remember, no answer is the answer. There is no answer possible from thought. This needs to be felt into and repeated over and over.
So in your case, this sense of self/perspective, what DE (direct experience) components is it made of? Sensation? Image?