You are almost done. Reattach the pressure gauge by screwing it back onto the pump body.

Test the pump. Hold your thumb over the end of the pump head and step on the pump handle. The pressure gauge should rise and hold steady, and you should hear no hiss of escaping air.

If all is well, you are done. If air is escaping from the crimped hose end, be less cheap and permanently install the hose clamp.