It was a great afternoon at Bolsa Nate! Your self-critique is spot-on. Exposure and sharpness are excellent. I would consider a vertical crop with a bit more canvas on both the top and the bottom of the frame. Keep up the good work!
Great light, sharpness and eye contact. Another vote for a vertical crop and more room top and bottom. I'm afraid the BG at the top looks different than the rest, though.