*deep breath* Okay. I'm going to do it
Good for you. It won't take long in the wider scheme of things, and it will remind people of you. You don't have to have a copy or look at it yourself. As Cicero said, hide behind people, smile and hope for the best.
My old boss wanted a photo of all her staff members, and we all lined up, but one girl said "Oh I break cameras, I don't like having my photo taken!" and deliberately put her hands in front of her face. What should have been a photo of us all together, no matter how we looked, and believe me, I'm not all that photogenic either, was spoiled by her attitude.