Lay out all the cotton pads on a clean surface and decide how many expressions you want to make. Arrange them roughly on a cardboard base to visualize the design.
Mix a few drops of food coloring or watercolor paint with water. Use a brush or spray bottle to gently tint each pad in bright shades including yellow for happy, blue for sad, green for calm, red for angry. Let them dry completely.
Once dry, use a fine marker to draw different facial expressions on each pad. Include smiles, frowns, surprised eyes, or angry brows to create a full range of emotions.
Glue the completed pads onto your cardboard base in rows or a grid. Make sure to press them down lightly so they stay flat.
Allow everything to dry before displaying it on a wall or shelf. You can even label each face or ask kids to name the emotion it represents to make learning interactive and memorable.