I spent half of a day working on this and I’m still not happy with it. This is what I started with.
I ended up taking this apart. It had wrinkles inside.
Ugh. And this is why you can’t trust the accuracy of the lines on these.
I pulled out the draw string and sewed ties in.
I tied these under the table top.
Not pretty, but so far it’s okay. I’m hoping it will flatten out over time.
Have a good day!