Ask for clear consent first
Communicate what he likes and what feels good
Use plenty of lubrication
Start with kissing, touching, and other arousal
Focus on areas he enjoys, including the penis and testicles if he wants that
Use steady, comfortable rhythm and pressure
Pay attention to his breathing, sounds, and body tension
Adjust based on his feedback
Keep stimulation consistent as he gets close
If he wants to finish, maintain the pace until he orgasms
Clean up afterward and check in with him