Quite simply put, the hose is kinked. In the second pic, see how your hands are low and the straight line from elbow to bit is broken? Nothing can flow through to the horse's mouth without a straight connection. Bend your elbows, lift your hands up a bit, get that straight line established and then ride the horse forward into your hands and soft allowing elbows. Lots of large circles, serpentines, spiral in/out and half halts for rebalancing.
That all being said, provide the straight line contact but then otherwise forget about the head. All those above mentioned circles and stuff are to establish balance into the outside rein, bend in the body and engagement from behind. Think rhythm, rhythm, rhythm. It relaxes most horses and they feel free to let go of any tension they are carrying once they have a nice quiet rider to tune into up there. The front end will come last once the horse is moving into the bit. You'll know you've got it when you feel a wave come up underneath you, his back coming up.
You just have to see your distance...you don't have to like it.