You have good height and stats and a pleasant look.
However, your posing comes across as clichéd, amateurish, tentative and unsure and your facial expressions are weak and not expressive.
You badly need a good headshot because I can't really tell how pretty you are from all the full and half length shots you have up.
I would suggest you are probably better aiming for commercial rather than editorial fashion as your look (from what I can see) is a little "soft" for fashion. That could possibly be improved with styling and experience but at this stage it's hard to tell.
Your priority at the moment if you want to make a career as a model should be to apply to agencies in person. They will soon tell you whether you have what it takes. Don't waste too much time trying to improve your "portfolio" here because any decent agency will almost certainly want to start again from scratch anyway.
To improve your modelling in general you need to study fashion magazines - real ones, not OK or Nuts! - and work with better photographers who will challenge you rather than allowing you to stand around doing almost nothing.
Just my $0.02