Dominance doesn't exist in parrots! If parrots don't want to come down, it's not because they are trying to dominate you, it's simply because they don't want to come down! It's like a child who doesn't want to go to bed at night. It's funner to stay up than to come down. If you have a problem getting your bird down, then I would suggest training him so he learns that coming down can be a good thing!
Casey (cockatiel) and Charlie (mitred conure) both enjoy flying to the top of my head. Casey typically doesn't climb down but sometimes she does (OW! my ears!). She readily steps up no problem, and has even flown to other parts of my body (shoulders, arms, hands, chest, stomach, and yes, even my butt!

). Charlie typically flies to my head, shoulders, arms or hands. If he lands on my head, he then prefers to climb down to either my shoulders or my arms. He's really happy anywhere as long as he's with me!
My avian vet has an african grey and a blue fronted amazon. She often brings them in with her to work! One night, after work, she was giving a seminar about bird care and had both birds with her. I was highly amused as her african grey sat on her shoulder and her amazon sat on her head! She just laughed and smiled! Apparently, the 'zons favorite spot is her head!
Where your bird sits is really up to you and how well the bird is trained! If the bird isn't trained to step down, you need to either not allow it, or do better training! With Casey, it was easy! If she didn't want to come down, I'd tempt her with millet or scritches! She *loves* scritches, so any time I ask her to do something, she always gets a scritch afterwards! No force required!