Advance ignition timing on 1994 5.0??

[USMC302]

Sotck and safe is 10 degrees advanced. Use a timing gun and pull the spout connector out, it's on the passengerside fenderwell, start the car and set the timing to 10 degrees by moving the dist until the balancer reads 10, hold the dist there, kill the car, tighten the dist down, replace the spout connector. Your done. have you ever used a timing light before?