I have had 2 hair transplant (photo)

This will be my 3rd attempt at hair transplant. How many grafts will I need and how many can my donor still provide? I would also like to blend my next HT with SMP. Please find the pictures attached. Thank you for your suggestions. Thanks.

The original donor density has to be known.  It may still be possible to estimate that number but I would have to examine you and measure it myself.  In addition, you did not state how many grafts you had so far and there is a suggestion of over-harvesting on the photos, but I would still have to see you to understand what your remaining supply is. SMP is the final step and should not be done until a Master Plan has been built!