The biggest issue was composition. Everyone's more-or-less on a single plane, the characters are all very small, and this was one of three panels in a row that were all like this.
Maxine's actions needed to be the focus here, so I brought her to the forefront. She's overlaid in front of the other girls to keep everything unified - the eye can follow the action in a direct line from Ruby (on the left), across to Maxine, her hitting Corinne's science fair project, and the dialogue / SFX. (2/6)