I have a different approach

**0) Have an idea of what to do.

1. You need to do research and gather your documentation together

2. Decide on the way to tackle the project in question and do some rough drawings plus a list of the parts you need to make.

3. Modelling.

4. UV Mapping

5. Texturing

6. Rigging for Poser

7. Testing in Poser.

8. Promo "pretty pictures" and PNGs.

9. Readme and presentation text.**

10. The most difficult part, can be one month, half year, a year or only one hour (insight)!  I run many ideas in parellel.

11. Zero to one month.

12. Fast, once you know what want to do, you know how to do it.
    3 + 4 + 5 + 6) All the steps I do at the same time. One, two , three or four days.

13. Once the model is done it's already tested, probably I posted some images with it.
    8+9) One hour.

Stupidity also evolves!