Strike Strafe Jump Help

[zkyz]

Hey guys, recently ive been getting into jumping. And i thought id start on perfectly one of those not easy but not particularly hard jumps. Ive been trying to perfect the one on strike, from top sniper across the road. However i can never really do it. I have done it here and there. However i dont understand why sometimes i make it sometimes i dont. Just wondering if u guys have any tips on how to strafe better. Or could u just have a look at the following demo and tell me what im doing wrong :S