The built in flash is just not really that good ...honest. Ok if it is still light out, but inside the longer shots are real underexposed. Just remember people look bad when eating so avoid that.Watch how the backgrounds are, and people walking in front of you.Act natural like you belong there. Try not pointing the camera in too many faces. That can make people pose in bad positions. I walk around and just take a ton of shots. Clutterd tables look awful too. Getting down low and shooting up looks good.

"The happiness of a man in this life does not consist in the absence but in the mastery of his passions."