2. Dual Stimulation — If your gag reflex is bad, it's OK— you can use your hand and your mouth at the same time. Something I've found my guy likes is when I do a sort of twisting motion while I'm jerking him, sort of like a spiral motion instead of just straight up and down.

3. Build Up — Don't just start going as fast and as deep as you can, or you won't have anything to build up to! How I start is by taking just the head in my mouth first, and swirling my tongue around it. Then, slowly, I take a little more of the shaft in my mouth, then slowly bob my head back up before going back down, taking a little more and increasing the speed a little each time. Also, try licking up the shaft while he's in your mouth.

4. Edging — Not everybody likes this, but personally it's something I enjoy doing. When he says he's about to cum or you can tell that he is, release him from your mouth and hand. Then slowly lick up the length of the shaft and start the build up again. It'll make the orgasm all the more satisfying to him if it's something he enjoys.

Just some tips I thought I'd share. Tell me how they work for you, and if there's anything to add please do so! :)