Hooray Me!

Lots of good news!
First, my dear mother informed me that while she was working the gallery yesterday, she sold one woman six of my items! SIX! AND, she should be inquiring soon about having a necklace made to match one of the bracelets. What's better, is the necklace is already made. It's listed on Etsy so, I can take it down from Etsy until I can make another one to replace the one I sell her. She hasn't called yet. She left her phone number with my mom who passed it on to me, but I don't plan on calling her. I would feel like I was pressuring her to buy the necklace. If she really wants it, she'll contact me.

And second... I made my first sale on Etsy today! YAY! The buyer paid immediately, so all I need to do is get her item to the post office tomorrow morning. The question is now... when to leave feedback?
There's been a few threads in the Etsy forums about this. One there right now, actually. But they never seem to help me decide.
Part of me thinks that once the customer has paid, they've fulfilled their end of the transaction. Another part thinks that the transaction isn't complete until I know the customer received their item and is happy with it.
And then I was thinking just a moment ago how a lot of people think that all a customer has to do is pay and they're done and should get feedback. Well, I disagree with that now. Being a good customer involves communication. I don't expect a customer to respond to every message I send them. But, I DO want them to respond if I ask them a question (about their shipping address, their payment, etc.). And I do expect them to be polite in their response. And, it would also be nice to hear from them when they receive it if they are happy with it or not.

So, I think my decision is to always use delivery confirmation so that I know the customer has received the item. But, do I give them a day or two to communicate with me if there are problems? Do I assume that no communication is good news and they are satisfied with their item?
Some customers are just not talkative. And that's cool. And I guess I wouldn't expect those sorts of people to write me and gush over their purchase.

I just wish there was a non-tacky way to let buyers know that I am not withholding my feedback until they leave feedback. If a buyer tells me they received it and they are happy with it, I would instantly leave feedback. If they are not happy with it, I would work with them to make it right and THEN leave feedback based on how that went.
It has nothing to do with when or how they leave me feedback. It has everything to do with me wanting to be sure they're happy. If I know they are, I will leave feedback regardless of whether they've left it for me or not.

Hmph, I feel like I'm just starting to repeat myself.
I think each customer is different. If they're talkative and I'm getting the feeling they're going to be happy with their purchase, then I'll leave feedback when I ship. But if they're not saying anything, and I can't get a feeling for their level of satisfaction so far, then I will wait until I at least know they've received the item.