3d Cad drawing

Information for the business: security products
Industry: Lifestyle/Travel
Design details: We need a proof of concept drawing very urgently of a new product idea. The basic layout is very similar to a smart phone case. It will be constructed in leather but we will need some 3D drawings made to allow proto printing in nylon.

The case will have a cut out in front to allow operation of the keyboard and similar access to the top and bottom to allow power and headphone jack access. The key difference is that it will have a range of "snap-in" frames to allow the use of different phone types. There will be a lockable clasp which fastens the case. There will also be some electronics in the case. I have attached a very rough sketch for information.
Ideas for the visual style: smooth finish phone case
Things to avoid: not too bulky
Extra notes: this job is very urgent and I would like drawing by Monday 23rd January