Can Anyone Help Me? I Need Some Tips On...?

I think you kind of answered your own question. Aside from the obnoxious answer, "keep practicing, you'll get it", you mentioned your left isn't as strong as your right. This makes sense as it isn't your dominant leg, however having the power to do the jumps will come from strengthening that leg. You should continue your releves to strengthen the calves. Also work on strengthening your quads and hamstrings by doing leg lifts (with or without weights as you can handle it). Glutes should be worked on as well.