Fork the project on GitHub
Clone your fork
git clone https://github.com/<yourGithubUsername>/<projectname>.git
Go to the project directory
cd <projectname>
Add upstream to original
git remote add upstream https://github.com/<originalOwner>/<projectname>.git
Create a branch
git branch <branchname>
Change to the created branch
git checkout <branchname>
Do your changes
Add your changes
git add .
Commit your changes
git commit -m “<comment>”
Push your changes
git push -–set-upstream origin <branchname>
Initiate the pull request
On Github go to your branch
Click the “Compare & review” button
Add a title and a comment
Click the “Create pull request” button