well.....i bet u're all experts.........i've only started playing dmc3 recently

 so...im kinda stucked in the chamber of echoes....well, yes ive defeated all the enemies there and got the astronomical board or something.....and ive put it in a clock(?) then aportal or watever it is has opened 4 the 2nd floor......but even if i jump....i cant seem to reach there im stuck......pls pls pls i beg u........help pls???? *falls on ur feet and starts worshipping*

i would be really glad if u could help me out