Let's start with accept. It's a verb, something you do. When someone offers you something, you can accept it or refuse it.
I'd be happy to accept a lot of things.
|I'd be happy to accept a box of chocolates!Spring Chocolate Dipped Strawberries - 1 dozen|
|I would gladly accept a little help with the housework. Or a lot of help.|
|If you're in a buying mood, I'd certainly accept these cute shoes!Late Dining Heel from ModCloth - $34.99|
ExceptExcept, on the other hand, is used to exclude something. Perhaps you can use the similarity in spelling except and exclude to help you remember that. "Everyone except The Hillbilly takes their shoes off at the beach."
|I'll accept any chocolates except the coconut ones.Medium Mount Chocolate Gift Tray|
|I'd be happy to accept any maid service except these three. They scare me.|
|I'd accept shoes except these. Maybe you like them, but not me. They make me shudder.Proper Copper Wedge from ModCloth - $49.99|
So that about covers it. There's nothing left to do except to accept comments. Let me know how clear this is or isn't. What else can I explain to you?