@kawright is asking how to edit photos on the OneDrive website, onedrive.live.com . This is a different access technique than an active connection with a Microsoft Account using the OneDrive app.
To edit photos on the OneDrive website:
1 Visit onedrive.llive.com
2 Download the photo or Open it with a suitable program or application.
3 Edit the photo using any suitable program or application.
4 Save the photo.
5 Return to onedrive.live.com
6 Upload the edited photo
To edit photos using a computer which is running the OneDrive application:
1 Browse to the photo.
2 Open the photo with a suitable program or application.
3 Edit the photo.
4 Save the photo.
The Windows 10 built-in Photos app will allow you to straighten or adjust photo colors, brightness, etc. There are many other applications available, free or fee.