I simply make things I think are fun. To not have any issues I will just say all designs will be AI assisted creations or tools were used to help create. With editing in Blender or other tools as well.
Offers Welcome
Any creation you buy from me you are free to use and modify as you need, check if I checked CU license to sell models you make, and let them know where you got it from. You may not sell the File itself to others.
I typically set all my models height to 150mm. If you want to scale down, X Γ Y Γ Z , Select the Z, change the size to what height you want, 28mm, 32 mm, 40mm, 75mm, 90mm, 100mm, etc etc. And make sure that x and y scales are linked to automatically adjust to change with it.