Is PRP helpful for the 11's, crows feet and the forehead or is it not meant for that area?

PRP would not be at the top of my recommendations for the expression lines around your eyes.  Dysport or Botox works significantly better, and in many cases even better in combination with skin resurfacing depending on your specific situation. 

The "#11" lines in the middle of the forehead, the horizontal forehead lines and crow's feet lines are caused by movement of muscles that cause these lines to form. The best way to address these "dynamic" lines is to immobilize the muscles with a botulinum toxin treatment like Botox, Dysport or Xeomin. PRP can help rejuvenate the skin itself buy stimulating new collagen formation. PRP will work best when combined with a micro needling or laser treatment. PRP will not stop the muscle movement so it is not a replacement for botulinum toxin. PRP can be used in addition to botulinum toxin,