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!