Many times, making out happens after a date night. If you've been eating or drinking, be sure you make an effort to assure your breath is fresh.  If you're at your own place or his place, run to the bathroom and make quick use of mouth wash.  You can also invest in Altoids, mint gum, or breath strips. You can buy all these products at a drugstore or your local market. A good make out session progresses gradually. As you lean in to kiss, allow things to happen at their own pace. Pay attention to the man's reactions; try to get a sense of what he likes and dislikes. Start off at a slow tempo and then, as things get heavier, move quicker and start using your tongue, hands, and other body parts. Many people enjoy some tongue during making out. If the man you're kissing seems to enjoy tongue, then don't hesitate to use your tongue during the make out session. If you want to allow the guy to take the lead, try opening your mouth slightly to show him you're interested. See if he initiates using his tongue. Sometimes, some mild teasing can really turn a guy on. In the middle of a kiss, pull back slightly and pull his head away from your face. Pause kissing for a few seconds and then resume. Many men get turned on by mild teasing during making out. Men, like women, have erogenous zones throughout the body. These are areas that respond sexually to physical contact. The neck and ears tend to have a lot of nerve endings. Try gently kissing or sucking a man's ears or neck during making out. This can be a huge turn on. The face is a sensual spot on a man's body. When making out, reach up and touch his face. Gently rub his stubble and rub his cheeks. Many men experience sexual pleasure through scalp massages, so try gently running your fingers through his hair as well.

Summary:
Freshen up first. Escalate the kissing gradually. Use your tongue. Tease him. Kiss the neck and ears. Touch a guy's face while making out.