When you look at this scene, you will find three distinct characters. The adult mushrooms stand on either side, flanking their smaller child in the middle. Each mushroom has a unique personality shown through their facial expressions. Notice the round glasses perched on their stems, giving them a studious and friendly appearance.

Their large caps serve as great spaces for color, and they are topped with various hats like a cozy beanie or a classic cap. The stems are sturdy and feature simple, smiling mouths and bright eyes. You can focus on the different textures of the smooth mushroom caps compared to the fabric of their headwear while you work.

Since these are cartoon mushrooms, you can use any colors you like to make them pop. Traditional forest mushrooms often have bright red caps with white spots, but you might prefer soft pastels or even neon shades for a fantasy look. Using a different color for each mushroom's hat helps them stand out from one another.

You could try using colored pencils to shade the rounded stems, adding a bit of depth near the base with a darker tan or grey. For the glasses, a light blue or very pale purple can give the illusion of glass lenses. If you want to add more detail, consider drawing small blades of grass or tiny flowers around their feet to complete the forest floor setting.