TTGO T Eight Case with OLED

I couldn't find a case for this board, it's a lilygo/ttgo T eight with oled. There is a difference between the T8 and the T eight (my T8 boards haven't arrived yet, but at first glace they don't have a OLED, and I think they are smaller).
I'm learning how to design, this is really one of the first cases that I've been happy enough to release - but it still needs work. Most of the time I make 8 or 9 prints trying to get things in the right place, this time it only took 5 times - so am I getting better (?) I guess that is the real question.
Most of the time, I make the cases way too thick - this one is probably too thin at least the top printed thin, the sides are a good size.
And I'm not great at making "lids" or covers - the cover works, it's more or less press fit, it's the right size, but I'm not really happy with it and think it could be better.
And I didn't take in account any type of battery, I think a small lipo will fit, but it would need to be pretty thin.
Use this as