1.
How do I upload them?[
^].
2. Your biographical details will be pulled from your profile bio. As I can see that your bio is already there in your profile page, so it will come directly. No need to worry.
You can preview your article prior to submission, so check if it coming at the bottom of article or not.
For full FAQ -
Code Project Article FAQ[
^]. You can ask questions there at the bottom, if you have doubts.