I've surely been there. When I was very young, I said "yes" all the time. It is a great way to get a lot of experience and I just seemed to have more time back then.
BUT, now I ... as politely as I can ... say "NO". Sewing for others can be so hard and frustration.
It is my favorite. If you seen it before, it's well worth a second viewing.
Here is the link if the video doesn't work here. CLICK HERE
Enjoy!
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This says it all.