How to finish slipping under a punch?

[GhostFighter]

Against taller people i often manage to slip under the jabs and deliver a jab or cross of my own at the same against there stomach but then i get hit at my tophead and pivotting to the angle while ducking is harder to do when ur ducking, with what should i follow my jab to the stomach while ducking?

[ProblemChild211]

simple.. slip lower... bend those knees and squat

[Righthandbanger]

your head should go where your hands are going.. if you're punching the body your head should be down there too or you're just sitting there with your hands down begging to be hit.

..if they are hitting you and your head is already down then its because they werent committed to the punch you slipped, you're not close enough or you too too long getting there

[{Pito}]

What does top head mean? Forehead? The top of your head? Pivot out while ducking or keep your rear hand up to catch any incoming counter jab while you jab their stomach. I do that from time to time.