hello webcreativearts. Nice model, It's really coming along. You really crank them out don't you? LOL. Anyway, looks like you already have a good start with the edgeloops, just need some refining. Attached is a pic of my first head. It is far from perfect but it should give you an idea of where to start with the loops. When creating this head I got in front of the mirror and made faces at myself. Noting where the face wrinkles, deforms, etc. Then I set up my edgeloogs to allow for those natural deformations. Like I said, this isn't perfect but I hope it can help.
If I may add one more small thing. The proportions are just a tad off. The head looks a little to "cone-ish" and the cheekbones seem to puff out a bit. Is looking great as a whole though. Keep up the good work