Just draw until you finished your drawing, then click space to see it drawn again if you wish to share it with other people, click see inside after you drew your picture and disable/delete any programming that starts with "when flag is clicked" and remix. (btw, you might want to add music to it if you remix so people will have something to listen to while watching how you drew your amazing drawing)
Only color you can use to draw in is blue, and not very big size pen, sorry.... i might work on that if i have time/feel like it. if there is any glitches please let me know. have a great day! - @MistCat