Hi and welcome to the forum. Nice to see you posting. Being a studio owner for so long, you're quite ahead of most folks already, as too many people open studios to only later shut them down.
Being in NY helps, great market for fashion/glamour, though a very competitive market. I think you're doing the right thing, pounding on doors and hitting the pavement. Add to that sending out cards and following up with art directors is the mold.
I think those are the basics, as well as networking. If you'd like more on composition and lighting and other glamour related topics, you may want to attend my 2003 Philadelphia workshop. It will be my fourth in Philly and I'll also have Fuji and Dyna-Lite there to answer any questions you may have, worse case scenario you will qualify for educational discounts from Dyna-Lite--just follow my link to my personal website for more information.
Again, welcome aboard, and have a great New Year...