Myself. Very straight forward. You've got to provide the right evidence (I-485 - basically documents showing you entered legally, I-94, visa page with stamp, DACA approval and EAD are a plus, I-130 - Bonafide marriage documents, strong evidence is basically items that show you are mixing financial life, anything counts, life insurance/auto insurance, pictures etc.) Also you got to be smart and only do the minimum required. For example, most of us are eligible to file I-864W since we have the necessary credits, no need to do the long form for no reason, complete waste of time.