use b to up the brightness, d to turn it down. use c to change the color. 1 is an eraser, press 0 to set it back to a pen. m to up the size and l to turn it down. x to clear. it's crap tbh but you're really not going to be able to make a good quality drawing program with scratch unless you're really skilled probably, which i am not
i would like to credit myself and my cat for no particular reason just hes really cute