The swirl area is always difficult because the hairs do not layer but rather draw one’s eye to the center of the vortex. The impacts of 4000 grafts depend upon the thickness of your hair shafts (fine, medium or coarse). The thicker the hair shafts, the better the coverage. I suspect that, looking at your result, your hair has a medium or medium-fine hair thickness. Please let me know if I am correct. The transplant was largely done in front of the swirl, but half of the upper swirl was included in the transplant. Note how difficult it is to get a tight swirl unless you put in more hair or have coarser hair. This is a nice result. Rarely does new hair appear from a hair transplant beyond 9 months. Congrats!
As an aside, Look at my crown hair transplant, which was fine when it was done; however, when my hair thinned out with age, a see-thorugh appearance showed my scalp. I had SMP done and the change was dramatic, see here; https://baldingblog.com/i-just-finished-my-smp-on-my-crown-area-today-see-before-and-after-photos/
