What you’re going to do depends on your ability level and creativity. At your level, stick to the basics. And don’t go all out (speed and/or power) yet. It’s about progression.
Start out doing the basic strikes you learned in class. If you do specific combos in class, do them on the bag. Basically, replicate what you do in class.
I like to do my basics hand techniques and combos we do in line drills against the air as warmups in class on my bag. That’ll look something like this (all without footwork):
20 lunge punches (lead hand straight punch)
- High, middle, then low, focusing on technique and targeting, not speed or power
20 reverse punches (back hand, straight punches)
- Same as above
Do the rest of your hand strikes - closed fist strikes like the different hammer fists, open hand like knife hand, ridge hand, etc. *I definitely wouldn’t do spear hand/fingertip strikes, but that’s just me. If I do them, it’s just tapping the bag cautiously*
Then I’ll start doing movement in a fighting stance without throwing anything. I’ll slide in, slide out while keeping my hands in fighting stance. I’ll angle left, angle right, circle left, circle right, slide straight left and right. I’ll do a set number of each on each side.
After that, I’ll combine the movements and hands. Slide in, jab (lunge punch), slide out. 20 times or so. Then the same thing, only reverse punch. Then angle in and out, circle in and out, etc.
Then do kicks, the same day or on opposite days. All the same principles apply. Front leg kicks, back leg kicks. Without movement and with movement.
Then start adding combinations - punching, kicking, and kicking and punching together. If you do combinations in class, do them on the bag. Make up your own and see how well they flow.
Pay attention to your form more than anything else. Once you’ve been at it for a little while, start adding power and speed. Regardless of how fast or hard you’re hitting, form is most important. Ever see the actual cardio kickboxing crowd in class, is not commercials? Their form sucks. That’s not really the focus of their training, so you can’t hold it against them. But if you train like them, you’re MA training will look like them too. The point is to enhance your MA training, not derail it.
Final thought - video yourself. Coach’s Eye is a great app. You can slow motion, fast forward, rewind, etc. Video will show you what you can’t see on your own.