Dad and I have made two to save on the cost. Also, to get the size, shape, and style I want. We made one to fit the picture windows in the front living room.

I always want ones with sides so the cat can't fall off. I had a bad experience with my first cat, Amber (Mr. Amber Cat). He fell asleep and fell off and hit his head a few times and slipped a disc in his spine once. He was on pain meds the rest of his life.

Make sure it is steady, cats don't like to feel wobbles under their feet. And if you can, make the base 1 inch larger all around than the top parts. If you have older cats, you want to make the sides a bit higher so a small pillow will fit in, to give those old bones something soft to be on. Those a few things we have learned along the way.

I really like yours, it seems the perfect height for Loki to stretch and reach and play! And most important, he loves it!