Ay yo beginner trials riders -
Make sure to learn pedal kicks using the tried and tested wheelie-stop trick.
When I was green to trials I tried using three methods - wheeli-stop, trying to kick from a back hop, and pedal-kicking to the back wheel and trying to keep kicking afterwards.
Captain hindsight tells me I could've dashed in the other two methods, seeing as I actually got the hang of it thanks to wheelie-stop.
So, use your pedals, get onto the back wheel, then give a sharp jap to the chocolate foot whilst letting go of the brake - you'll wheelie forwards a bit! - then pull the old finger in and lock up, set your feet back up for another jab and go again.
The key is the timing. You don't have to add in the jump until later, that's overcomplicating it. When you can wheelie stop you can add that jump you've learnt through backhops.
HEY PRESTO you can pedal kick.