Elle Hanley Photography wrote:
Honestly, I think the "whatever you want to shoot" is what's hurting you. Approach a model with a solid concept that is already well thought out so they can honestly tell you whether they are interested in it or not. Not having a strong concept for a shoot can make you appear unprofessional or that you lack confidence in your own work. In most cases "whatever you want" photos don't end up being published or exhibited which is something else that might be of interest a model.
+1 on that. I found I tended to get better responses from people when I could explain the concept. You could also take a look at lists created by models you're interested in working with and see if there are some mutually attractive ideas to offer.