You can ask me do do any kind of 3D work for you for one hour. How much work can I complete in an hour?
Well, if you show me a sketch or drawing, and list your requirements then I can tell you how many hours of my time you need. Then you can buy however many hourlies you need to complete the job.
I need a very clear idea of what you want, because I'm really not much good at mind-reading.
So, make your information clear enough that if you show it to your window cleaner or car mechanic, they will understand exactly what you are after. In which case, I will understand too!
If you are not sure what information is needed, just ask me. I am very friendly, and usually do not bite.