First things first... I filled the skin tone area in with Tsukineko no. 95 (Tuscan Beige) all purpose craft ink.
Using a light Fabrico marker ( no 152) Sand to lightly outline eyes, nostrils. again... get it dry before next step. ( I will darken eye perimeters later. )
Add some baby blues
I'll use the same image to explain 2 separate steps.
I used a red Fabrico( 114 Poppy) to add lips, a brown Fabrico (use either Truffle 155 or Chocolate 154) to darken upper lids, and a small black pigma to add the eye pupil
I used a very dry brush Tsukineko ink no, 52 (sand) to add a soft contour to his face, eye, nose and very dry brush 15 (Cherry Pink) for his rosie cheeks
A black Fabrico marker( no 182) to darken inside the mouth
And lastly either white (no 80) ink or a simple acrylic to add a highlight on the lower lip and soften any edges you think in need ... eg the right side of his lip above was too strong.