Here's a sample README.md for your use.
Create a README.md at the root of your repository with the following contents:
# MyProductName
A description of the product goes here.
by super_awesome_dev
original file by another_developer
## Description
Here's the long form description, listing features and whatnot of the product here.
## Variants
- **Variant 1** - Listed release variant 1 description here.
- **Variant 2** - Ditto for variant 2.
This section is optional if you have just one version.
## Materials Required
You will need a set of each below for each [x] you make.
- x1 **Parts Kit** - Procure a parts kit of your preference.
- x1 **Steel Spring** - this is for retaining the magazine release button
## Instructions
1. It would help to include printing instructions, i.e, orientation, support usage, temperature, line numbers/width, etc.
2. Keep your steps easy to read, and digestiable.
Pro-tip: A helpful tip can be insert here too.
## Change Log
- v1.0: Version 1 Release
* Documentation update.
- v0.2: Private Beta Candidate 2
* Product update change goes here
* and here too!
- v0.1: Private Beta Candidate 1
* Initial commit
## License
MIT License or GNU Licenses are great places to look at for open source software.