meh dont listen to frenchy...he is being a fag...again
anyway...nice going dude... the trick for this particular jump is not precise 180 but you should jump more precise. you can jump in 2 ways:
1. jump when you are touching the wall
2. jump just before you touch the wall
of course number 2 is the preferred technique here... you will see that by jumping just "before you touch the wall" will actually get you higher which is necessary for this jump.