To call up a sprite:
SPSET 0, 501
To make that sprite move around:
SPOFS 0, 50, 15
Everything you need to know is on the sprites page: http://smilebasic.com/en/reference/#sprite
Use the smiletool (green button on keyboard) then click "paint" and go to "SP". Draw your sprites, then click save to save them under a file name in the project folder. Then just use a load command in your game.
(LOAD "GRP4:FILENAME",0). From there, you can define and use your sprites as normal (using SPSET, etc)
But would it be easier if I'll just start on a blank page like G0 or G1? Because the "SP" page is usually already filled with other sprites (another question... how do I clear the "SP" page?)