At first, I too thought I'll never become good at it, I'd gag viciously with 4 inches. I thought my throat is small (I have mild dysphagia at times so I was certain it was my anatomy the obstacle). There were times I wanted to give up training, gagging, unable to stuff anything bigger than 4 inches. But I didn't. The result? I can now deepthroat 8.1 inches, I can keep it down for 60 seconds, I can breathe while keeping it down, I can massage the shaft with my tongue while keeping it down and only recently started practicing swallowing while keeping it down.

I was stuck for a month at 7.2 inches, never gave up until I found out what I need to do (relax my throat, open my throat, use my tongue, swallow, etc).

So, keep practicing and if you have a certain problem (ex. I am stuck, like there's a wall in my throat and can't go down further), tell us, we'll help.

PS. I wouldn't recommend practicing with cucumbers as nikolaos84 suggests, they are too rigid; a dick, even when erected, it's not that hard (especially a big one). >:D I practice with long, peeled bananas WEARING them A CONDOM first, keeping the condom's base AND bannana's to make sure it won't slip in my throat and kill me. I try finding the longest and thickest ones. Their length are usually >8 inches but their thickness is usually not as big as a cock would. It's OK, though, should your throat becomes accustomed with something thinner, it will be easy to upgrade to something thicker. A dildo is the perfect toy for practicing but I understand if you can't have one, that's my problem as well.

You always have to appreciated the cock that is right on your face. Lick, down to up, always go for the head and slowly go deeper till you feel about to vomit. Be gentle with the balls, most guys feel sensitive there. Use your tongue, lips, and BREATHE. ALWAYS BREATHE. Don't forget, if is possible, look to the guy face when sucking, then do a deep throat, he will marry you.

Thats exactly how i like to be sucked lol