I am trying to even out the skin tone on the arm of my son. This photo was taken at the Salt Flats in Utah with a manual lense, so there is glare and a lack of super sharpness in the original photo. It was a quick spontaneous moment that I was lucky to catch. I am not that concerned about those issues. My concern is the abrupt skin tone change on my son’s arm due to the taning of the lower arm. My attempts to match the skin tone only succeed if I allow the tatoos to fade dramatically. I would like to have the tatoos remain dark but the skin tone lighten up. I would prefer to know the proper steps to do this as opposed to someone doing it for me. I am asking for help so that I learn more about using Affinity Photo on my iPad. Thank All.