Pls help with double jump cancels

[Xyzzy]

Hello, I just can't double jump cancel at all from the ground. When I try to for multimags or pk fire movement I'm too slow. Is there a trick for this, or do I just need to get faster? Thx

 

[Evilkitty420]

Im struggling with the same thing. your first jump needs to be a short jump. also, have 2 jump buttons mapped