Green Thumb Challenge

I've never been able to keep my hanging flower baskets alive. I water them, give them plant food, put in the right extra soil to pot it correctly, and I'm still killing the poor hanging baskets. I've killed 2 already this season. Any advice??? I love the look of hanging baskets on my front porch and am near to considering artificial plants in the hanging baskets. Wouldn't that be a something?! Ha! I need help please~