If your part comes off the plate you may see it stick to the nozzle and create a blob. Even worse - the part may not stick to the plate at any point and you'll see only a blob.

Assuming your Z-Offset is correct and your nozzle comes all the way down to the plate, you're probably just a little short on hairspray. Hold back 6-8 inches and spray back and forth.

Give it 10 minutes or so, or until its dry to the touch. You can apply multiple coats if needed.