Hickory...part of proper alignment is aligning your face out of the way of the string! :D
Seriously, you may be over correcting something...or your facial structure may not like your anchor point while in that position...that can happen when you change something else. You may be leaving your face in the same place and not aligning it, and that fraction can cause you to hit your nose.
Hard to explain, but if you move your shoulders to be perpendicular, your bow arm will move in the opposite direction, as should your face a tad so your are still looking down the arrow. ....this will lengthen your draw, but from the 'front end' not the rear end.
The goal is to get as close to a parallel plane with your arrow, shoulders, and power points(writs and elbow) as your body structure will allow.
Any way you can video your self?