May

Hi, I am completely new to Affinity Photo and I don't have a PS background, only LR. I have watched the tutorial vids and I am really excited about this program. I need help to get started with making adjustments to skin tones using CMYK and RGB values if someone could help me with a step through. I am accustomed to scanning the skin for the values and making the adjustments through exposure, temp and tint in LR but want to fine tune with exact values in Affinity. I am just not sure how I go about setting up the process though using masks and layers. thanks in advance! :)