Hi there, I am in the process of getting my Spouse Visa packet ready to send out and I was hoping someone could double check what I have so far and answer a few questions or areas of concern... Thank you so much! 
Packet Includes:
Priority Receipt
Return Waybill
Passport
Passport size photos (Me x2, Sponsor x 1)
Applicant Information
Letter of Introduction (Can someone specify what exactly needs to be in these?)
Birth Certificate (Do I need a copy of my birth certificate or is this optional?)
Biometrics (stamped)
Immigration Health Surcharge Receipt
Printed Online Application (IHS # written on top)
Appendix 2
Sample Flight Itinerary
Sponsor Information
Letter of Introduction (Same question stated above)
Copy of Sponsor’s Passport (Is this necessary?)
Copy of Sponsor’s Birth Certificate (Is this necessary?)
Financial Requirement
Bank Statements (to meet the financial requirement, my husband receives money from an owned rental property. We have highlighted each month to show the income of this property) [/COLOR]
Sponsor's Mortgage Statement (To show ownership of rental property)
2 Tenancy Agreements (As the 2 agreements overlap the 1 year period, with letter of 1st tenants intent to leave)
Letters of Academic grant (x2)
(*The income form the rental property plus the 2 academic grants meet the financial requirements. Is there anything else we could be missing as proof?)
Evidence of Accommodation
Letter from In-laws granting permission to stay at property
Council Tax Bill (In-laws property)
Proof of Relationship
Marriage Certificate
Pictures Throughout Relationship (15 in total)
Flights Throughout Relationship
Facebook Messenger Screenshots
Skype Screenshots and Logs
Packet Includes:
Priority Receipt
Return Waybill
Passport
Passport size photos (Me x2, Sponsor x 1)
Applicant Information
Letter of Introduction (Can someone specify what exactly needs to be in these?)
Birth Certificate (Do I need a copy of my birth certificate or is this optional?)
Biometrics (stamped)
Immigration Health Surcharge Receipt
Printed Online Application (IHS # written on top)
Appendix 2
Sample Flight Itinerary
Sponsor Information
Letter of Introduction (Same question stated above)
Copy of Sponsor’s Passport (Is this necessary?)
Copy of Sponsor’s Birth Certificate (Is this necessary?)
Financial Requirement
Bank Statements (to meet the financial requirement, my husband receives money from an owned rental property. We have highlighted each month to show the income of this property) [/COLOR]
Sponsor's Mortgage Statement (To show ownership of rental property)
2 Tenancy Agreements (As the 2 agreements overlap the 1 year period, with letter of 1st tenants intent to leave)
Letters of Academic grant (x2)
(*The income form the rental property plus the 2 academic grants meet the financial requirements. Is there anything else we could be missing as proof?)
Evidence of Accommodation
Letter from In-laws granting permission to stay at property
Council Tax Bill (In-laws property)
Proof of Relationship
Marriage Certificate
Pictures Throughout Relationship (15 in total)
Flights Throughout Relationship
Facebook Messenger Screenshots
Skype Screenshots and Logs