Get edit form from a webform submission I want to get the edit form from a Webform Submission to handle this in the logged in user area.
Like node/{node_id}/submission/{submission_id}/edit
How do I do this?
If I understand correctly your question, 
you should click "Use the administration theme when editing or creating content" in admin/appearance 

Even better, try Administration theme module which will allows you to use you Administration theme on more pages like:

node/*/webform-results
node/*/webform-results/*