kinda deleted one of the printscreen pic ==” ahwell. to do a simple shading. use the layer 2 that you’ve created earlier. but remember
if you want to do lightings. use Bright colors. Shadows. maybe black with lower Opacities.
Lastly. do exactly like Layer 2 but.. BUT!!! use white 🙂 so you’ll have 3 layers for each color tone. repeat the same steps you’ll get the hang of it :).
For shadings like these 2 pictures up here. Create a new layer. draw out the shadow from your original picture. then press “i”
to select the color to fill in. then go to your gallery
From the selection box. go to Blur>Gaussian Blurr. a box will pop up to ask how many pixel you wanna make it blur.
results you’ll get are like the cheeks and shadows in this photo 🙂
hope this tutorial might help. as i’m not really good in tutoring or explanations.. ><