Press the flag, then press next. To add one (a coat) simply click on the horse sprite, then go into costumes, right click on the one you want to use, click duplicate, go to the bottom of the list in costumes, click on the duplicated horse coat, then click the colors in the color bar you want to use, click the bucket on the side or paint brush, then fill in a section, add another and fill it in, paint it, e.c.t. I know most people already know this but if they don't... Update 1: Added more coats Update 2: Added a '1' horse Update 3: Added a variable Update 4: Made it flash rainbow Update 5: Added rainbow, unicorn, and Pegasus coats!