Go to your "Flow Conversation". Locate the file that needs your E-Signature. Click "Review".
On the next page, click "Sign".
Make sure you write your initials in the "Initials" box then tap on the "Signature" box.
Glide your finger on your mobile screen to pen your signature.
If you made a mistake, click "Clear" and redo the signing.
Once done, click "Save".
On the next page, click "Accept Signature".