There are no hard and fast rules to this as each individual may like to use different shades.
Basically use 2 or 3 shades similar to each other for the skin and another colour for the cheeks.
I like to use 3 shades for the skin which are
Pastel Pink R738
If you use a dark brown ink rather than black your image will appear much softer
First I take the Ivory pen and colour the face leaving the middle clear where the light would be shining
I work in small circular motions rather than using strokes
Next I take the Blush pen and colour around the edges
I take the Ivory pen again and go over the blush working in small circular motions and dragging out the darker colour so that it 'blends'
I use darker Oatmeal around the very edges of the face as this is where the face would be darkest
I take the Blush pen again and go over the Oatmeal to drag out the colour
I then blend out the edge of the Blush again with the Ivory to soften the look
I add cheeks with the Pastel Pink.....don't worry if your image looks like 'Rag Dolly Anna' at this stage as the cheeks will be blended in
Blend in the edges of the cheeks with the Ivory pen so they don't look so harsh
Build up the skin on the hands in the same way as the face
I have coloured them first with the Ivory pen........
...........then added the other two colours where there would be less light and blended them together as before
If you are new to ProMarkers and are planning to build a collection then I recommend you get the sets 'Skin Tones' & 'Skin Accents' I have used pens from both sets in my tutorial
I wll be back to show you how to colour Chloe's hair and clothes another day
Right now I am going out to sit in the garden as it's a lovely sunny day!
I hope you have found my tutorial useful....please leave a comment if you have!