Hi @SystemTEJ
This is a full-blown ask for delivering an Approval engine for you.
Here are some suggestions to look for and get you going. When you come back (at least for me) with something that isn't working i'm glad to help
1. Create an Automated Flow - Trigger is When a Response is XXXX for forms
2. Now you need an Approval
but you said the last step but didn't explain at all that there are steps
However, you would add an Approval and Attach the details for the Form as Attachments to the approval and if you need ALL to approve, set it Everyone must respond
3. After the Approval finishes, log or do whatever you want with the responses, after you Iterate through them with an Apply to each, to verify if they approved or didn't
4. Add an Send Email V3 action
Set the To value, the from value (if its a shared mailbox but that here)
Attach anything you want
Create your Message
And by Signature I dont think you mean SIGN it, I think you just mean a nice Signature.
Make sure for your Email you change it to HTML format by clicking the anchor at the end of the menu that way you can easily format everything nicely.
Now, I have literally given you every step so thats the solution.
If I have helped you, I would really appreciate if you please Mark my answer as Resolved/Answered, and give it a thumbs up, so it can help others
Cheers
Thank You
Michael Gernaey MCT | MCSE | MCP | Self-Contractor| Ex-Microsoft
https://gernaeysoftware.com
LinkedIn: https://www.linkedin.com/in/michaelgernaey