must pass the life in the uk test first.

marriage certificate
valid passports
payslips
utility bills
bank statements
mortgage or tenancy agreement
medical card
Any subscriptions that showed your name and address
Any evidence that shows you and your husbands name and address
Correct visa fee £750 by post or £950 for premium.
Etc.

Read the ILR notes for your guidance.

What visa you currently holding? Spouse visa or FLR M (extension visa from fiancee visa).