As far as your head being down to see through the peep. Yes making draw length longer will bring peep up . But that may not be what you need. You want string to be at corner of your mouth, with nose just touching the string, and arrow nock end should be in line with corner of your eye( or close). What you should start with , is get about 5 yards from a target high enough that with bow arm perfectly straight out , arrow will hit target center. Now draw bow with your eyes closed. Come to full draw, head perfectly straight up, and when you get settled, open your eyes. Don’t move anything. When you open your eyes you should be looking through peep , and peep and scope should be perfectly aligned. If nose is touching string, string at corner of your mouth, but peep is low, that means you need to just raise your peep higher, NOT lengthen your draw length.