For this sports theme cake I baked sponge cake and iced it with vanilla buttercream.
I covered the cake with fondant, but I airbrushed the bottom cake with black before doing so. I covered some spaces in order to make black and white stripes as I airbrushed and let it dry.
For the crown, I first made the pattern with parchment paper. Then I cut it out and used it as a template to cut out the rolled fondant. Once the covered fondant cake was dry, I stuck the cut out crown to it and let it dry. Then, I airbrush it with the color I wanted it to be.
For the soccer ball and the basket ball I used Styrofoam balls and covered them with fondant. I also airbrushed them in the colors I wanted them to be. Finally, I made the football with fondant and let it dry rock hard. I then airbrushed it and let all sit for a day to dry.