Student or Learner
I am still working on the project.
The project is still being worked by me.
Is the above Passive is correct?
And don't use that passive version when you're actually speaking English to anyone. It's completely unnatural even if it is grammatically correct.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
If by me is important, then the active almost certainly will work better. The project is still being worked on could work, but the version with by me is, as emsr2d2 says, unnatural.