USCIS Filing tips:
- Read USCIS Instructions for the specific form/application you are filing;
- Always keep copy of what you send;
- Sign and date all forms/applications;
- Check that the form/application is valid on the USCIS webpage for that form;
- Check filing fees on the USCIS webpage for that form and that check that amount being sent with form/application is correct;
- Send form/application with accompanying documents/evidence via USPS express with tracking;
- File on time!