Draw a sketch and give a main bg color, the skin will be influenced by the bg. Take the skin tone of ur character and overlay ur bg color or lower to opacity of the skin layer by like 10%(or whatever looks good tbh)

Use a soft brush to add the reds and blue undertones to the face. Blue near the chin and neck red near the eyes, nose, lips, cheeks, and ears. I like making my charecters very flushed but that’s just personal preference. For lighter skinned characters the red will lean more towards light pink while darker skinned chars will look more natural with a deep red purple.

Add ur lighting! Follow the shape/curve of the face. If it’s light exposure then flush out all the details in the light bits, If it’s shadow exposure make the dark parts undetailed

Add a saturated color around ur light source (pink in this case). Add more in in thinner parts of the skin to show the light coming though. Color ur lineart and fill in the eyes. (If ur going for the look of my usual art render over the lineart and redo it neater on top)

Hair, highlights, details, and liquify fixes! And it’s done :) (I FORGOT TO ADD HIGHLIGHTS TO THE EYES SRY😭)

I use a custom edited brush on ibis paint X, but it’s very similar to “dip pen fade” for all my rendering!

Sorry if it was a bit rambly or unclear, I tried to explain my shitshow of a process the best I could 😭