You will need overwhelming evidence that your marriage is "bona fide" to prove to the immigration officer at your interview. This evidence includes joint bank accounts, joint lease, joint tax returns,
joint utility bills, phone call records, tons of pix of your wedding or of the two of you just hanging out e.t.c. You basically want to show beyond a reasonable doubt that you both entered into this marriage for love, and not for an immigration benefit. Marriage fraud is a serious crime, up to 5 years in jail and a $250,000 dollar fine. Also, you are required to provide an affidavit of support for your spouse and and are on the hook for 10 years were they to become a public charge.