Newbies to Boxing always have a habit of always stepping in when they strike. If you can hit him right where you are standing, then you don't need to step in. If you can't hit him, then, step in. People often neglect keeping their distance when they attack and they'll always step in to punch no matter how far or how close they are.
The Low Jab in Boxing is a super effective, low risk attack that you can use at any skill level. Just remember to cover your chin, drop your hips and step into the attack and you'll be much safer from potential counter attacks.
Kickboxing students usually stare at the target or the tool; meaning, they usually look right at the target they want to strike or they stare directly at the tool that is attacking them. Many kickboxing students are often confused over where to look when they spar.
Kickboxing students, typically, only use the jab to hit with. That's it. And that's fine. The jab is an attacking tool. However, the jab can also be used for many other things. There's an acronym that I use to describe the purpose of the jab.
When you're Boxing, you need to exhale with each punch. Not only will it extend your endurance - you will suffer an oxygen deficit if you hold your breath through a high number punching combination - but it will also enhance your punching power.