The way to jump..... practice!
It can't be taught, the basics can be explained but it'll be wasted if you have to stop and think before you hit the ramp. Just do it, lap after lap, and its like riding a bike, once you got it, you might still fall off.....
I find the best way is pivoting the foot at the ankle, then bend the knees as you land.

if yellow paint on nose, thats diving - aka Arsenal style.