This hackathon is about leveraging existing Actions. If you created a workflow a few months back, then it's an existing Action.
I'd recommend building on this existing Action you already created and submitting that along with your blog post. You could mention why you created the existing Action, and then how you built on that during this hackathon.
Good luck ❤️
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Can we submit the workflow which was made a few months back?
This hackathon is about leveraging existing Actions. If you created a workflow a few months back, then it's an existing Action.
I'd recommend building on this existing Action you already created and submitting that along with your blog post. You could mention why you created the existing Action, and then how you built on that during this hackathon.
Good luck ❤️