Good portfolio, but in model perspective, some of your images are too dark and you loose the model rather then achieve the silhouette capture.
I personally agree with Keith that if your going to do dark imagery, do it to accentuate the curves and natural beauty of the model(s). And for that, typically implied/topless/nude is called for.
I like the swimsuit concept, but I'd rather see it in light of day then cover of night/evening.
Just the personal opinion of a model.
Good luck to ya!
Have a great New Years!