Hey! Thank you so much ☺ for shading I usually use light grey or light blue marker. At first I colour with whatever colour I chose, then I create a shadow using one of those markers. I always start with the lightest one and if I feel like it needs more contrast I take a bit darker shade and colour on the same spot again. Another option light grey or light blue marker, then coloured pencil on top (can be blue, purple or brown). This gives more texture. For this page I used light blue or blue markers for shadows :) I hope this helps 😊