I've had 2 HT’s and will need 1 more to fill in the crown area which will be done from my beard hair, will this work?? (Photo)

Beard will look as natural as the hair on the transplanted area. In some cases the donor area won't have enough hair(the back of your head), this is why it is very common to use the beard as a second donor area. 

If you are considering a cosmetic surgery it would be in your interest to see a doctor for an examination to make sure you would be a candidate for beard hair harvesting.

Beard and body hair can be used if your scalp donor is no longer an option.A great first step would be an online consultation. Often you can submit photos to the top hair restoration surgeons in the United States for a complimentary evaluation which will include graft amount and pricing. This should help lead you in the right direction. Having multiple online consultations with different doctors and compare evaluations and hair loss plans. 

Yes, a beard to crown hair transplant will work. The beard is a good source of donor hair only when the donor area is depleted.