Please remove the cartridge and wipe the nozzle gently with a tissue. Then flush out the sprayer by pressing the nozzle button (you should feel air coming out of the nozzle head). Insert a cartridge into the nozzle and listen for a "click". Spray in a circular fashion about one inch away from the paper. If, after following the above suggestion, your sprayer is not functioning properly, please contact Crayola Consumer Affairs by calling (800) 272-9652 weekdays between 9 AM and 4 PM Eastern Time.