zgmf-
I feel compelled to jump in here.
First of all, although I did look at your photos, I would be very wary of forming the conclusion that you are experiencing ANY early or premature balding issues, based on that evidence alone.
Please take a step back and, if you are really concerned, see a Hair Restoration MD in person so that the assessment can be made in the proper matter. The above posts, as always, are well intentioned and sincere, but in all fairness the diagnosis is best made in person. (Something we all cannot do here, so we all offer our best advice despite that limitation.)
Hope that helps.
Sincerely,
Timothy Carman, MD
La Jolla, California
(link removed)