Move your mouse around in a circle at a chosen rate to create a flower. Then, when the flower is filled at a satisfying constant gap between petals, press 'STOP'. After that step is complete, click on any redundant petals to delete them. When you are satisfied with the product flower, click 'NEXT', to reveal a stalk, which you can move to match the underside of the flower. When the stalk is in position, click 'FINISH' to complete your flower. Your backdrop will become yellow. Then you are able to click the backdrop to change its color. You have 26 colored backdrops (including white) to choose as your background. Once you have selected a background color, use Snipping Tool or your screenshot function to take a memorable screenshot of your wonderful flower! Happy Scratch Gardening!
See also: http://scratch.mit.edu/projects/121639670 (Highlight link, right click, go to http://scratch.mit.edu/projects/121639670/)