2. Prolong his pleasure. Oral pleasure is so incredible, most guys want it to last for as long as possible. Not every blowjob needs to be a marathon, but every once in awhile take the opportunity to really slow down and stretch out the experience. Try the edging technique: learn to read his arousal signals, and as he gets closer to ejaculation, slow down your stimulation or simply hold still. As soon as he has relaxed a bit, go back to building up his arousal. Keep reading ...
Challenge yourself and see how long you can sustain high levels of arousal before taking him over the top! As a couple, work on communication and paying attention to the signs of his arousal so you'll be able to tell how close he is to orgasm. Bonus: as he learns to prolong his arousal he'll be able to last longer in bed when making love to you!
3. Make it wet. Sensation feels way better when you make him wet. Try to generate lots of saliva and use your hands to spread it all over the head and shaft. If you need help generating enough moisture, suck on a mint to get your saliva glands going. If you are not using latex condoms, you can add to the lubrication with almond or coconut oil. Both taste great and can add a lot of slip and slide. If you will be using condoms later, stick with saliva or a water based lubricant.
One guy reported that his best ever oral sex included almond oil and lots of manual stimulation: "I was with a girl who loved giving head. She also knew that she was good at it, so she was very confident. She used almond oil as a lubrication, and she didn't mind getting it in her mouth, so she would put the oil on me with her hands and then use both of her hands (they were small) and her mouth. Then I would try to fight her to not cum, and she would "win." And then afterwards she would swallow and say "thank you!" with a hungry grin on her face. Hottest thing ever."
4. Make noise. Let him know that you are enthusiastic and turned on by making noise. Moan and groan as you go, letting your noise turn both of you on. This can be a great way to take a rest as well. Stop what you are doing, look up at him with big wide eyes and talk to him. Unless you love talking dirty, just keep things simple. Say things like "Does this feel good?" or "You look so hot to me right now" or tease with a question like "Want more?"