I need a fashion sketcher to help me draw my garments for manufacturing.

I am looking for someone who is able to draw and sketch my fashion garments onto a model for me to send to my manufactures. I have the designs but i am unable to draw and would like to work with someone who can help me with this.

Please advise me on the following:
1. Turnaround time for the designs.
2. Costing (fixed rates).
3. Copyright terms. (As I own the designs, would you be comfortable in sending me an email once the drawings are complete that they belong to me).
4. Any other areas you would like me know about.

Please note i am looking for someone who can work with my on a long term basis.

Many thanks,
Yojana