Hi, I'm also in the process of appying.
cost : around 2 laks( IELTS, WES, PR application fee, medical etc)
if you're applying alone
proof of funds: must show minimum 16 laks ( 12500 * candian dollar selling rate)
occupation requirement : your occupation should be in the NOC system, also minimum 80% of your job duties should match with the NOC job code.
Degree requirement: check with WES whether they accept it as a 3 or 4 year, most diplomas are not accepted

.
IELTS requirement : must have atleast 7 in every component to achieve the desired points level.
recommended points level : S 7.5 -9 , L 8 , R 7-7.5 , W 7
Age : after 29 your points decrease by 5 for each year.
please correct me if I'm wrong.