Training on pads will improve –
Here are some simple examples that you can vary to suit your discipline.
1-2-3 (jab, cross, hook)
1-2-3-4 (jab, cross; hook, uppercut)
1-1-3-2 (jab, jab, hook, cross)
For Muay Thai, Kickboxing and Mixed Martial Arts, you should consider Thai pads, which accommodate for both hand and leg impact.