heysomeone know how to change the models of the sonics ???

i want to use this model

I'm pretty sure you can only use Cubik or Techne models for Minecraft.

This is Tinkercad I assume?

Items only accept JSON models not whatever model that is

For future reference, the Ask For Help section may be a better place to post when needing an answer to questions.

That wouldn't work in Minecraft, unless it can be converted to Blender, then it could be loaded poorly. You'd also need Cubik for that