I worked with Storyberries (UK digital children's book website) to illustrate this book called "Scowly Puss and the Very Rainy Day". I normally start sketching and designing the characters on paper and pencil. Then I refine it on Photoshop, finish the sketching for every page, work on the colour scheme and then complete. I used Photoshop and Indesign to put these drawings together. 

You can read the whole book on Storyberries.com https://www.storyberries.com/bedtime-stories-scowly-puss-and-the-very-rainy-day-short-stories-for-kids/