If you want to see what it looks like before printing it, watch my video: 

This model is the portal of the End of Minecraft, inside you can put a phone with maximum measurements of 80 x 165 x 12.8mm,
If the phone is smaller, the model can be scaled until the correct proportion is found.

The portal animation video can be downloaded here: https://mega.nz/file/2V5xBIhA#KQxU4VWau83iZAWJ6MIkecdJ2h1dTQkRTF0vRsVTkAk

You will need to use glue to stick the top pieces together and then to the base.

3D PRINTING PARAMETERS

In principle no supports are needed, the first layer of the portal textures will be printed in the air but the second layer will stabilize the shape, if necessary use a border.