make sure he brushes his teeth, is a clean person, showers everyday and its not cheap with money, a generous person will always make you happy and Hashem will always send blessings. He should have a nice character and never talk or raise his voice to you.
You should feel proud to be next to him. a good family is very important make sure the family is in a normal situation, like everybody should get along.
Check his past and make sure you are in your senses and do not look only for looks, looks are decieving and the most important thing he should be good. And please dont forget he should never ever raise his voice.