Step 1. Wait for the half-baked ideas you’ve been collecting and mulling over to coalesce into a Good Idea for a Picturebook. (estimated frequency: once to twice a year).
Step 2. Develop that Good Idea into a story which would work as a coherent whole formed of interdependent and mutually enhancing words and pictures. Think of the size, shape and orientation of the pages for the story. Think of the style of illustration. (estimated time: 1 week to 1 month).
Step 3. Structure the story into a number of pages divisible by four, making sure that pacing is right, the story arc has the right balance and there aren’t any unnecessary or slow doublespreads. (estimated time: 1 week to 1 month)
Step 4. Now work on the text in your mind, picking the right words to express the right things in relation to the right illustrations you’re also imagining. Juggle with all that in your mind. Pay attention to rhythm, imagery, vocabulary, grammar. Make sure you don’t repeat in the words what is already visible in the pictures. Imagine the pictures at all times. Say the words out loud to make sure they sound good. Think of an adult reading the picturebook to a child. Think of a child reading the picturebook to an adult. Tweak the words in your mind until they’re all necessary and sufficient. Repeat them to yourself until you know the whole text by heart. Read the picturebook to yourself in your mind (close your eyes to see the pictures). (estimated time: 1 week to 6 months)
Step 5. Open a new Word document. (estimated time: 11 seconds)
Step 6. Write down the text of the picturebook, as well as explanations between square brackets of what should be shown by the illustrations. (estimated time: 10 minutes)
You’re welcome.