WarMod Collaboration

Hey ! I start create a mod with different siege engines :
ballista,onager,belfry,mantle ...

I've already created the mantle and I try fort the onager. The problem is i'm not very strong for use Mcreator but i'm good for create 3D items/blocs ... with Blockbench or MAgicaVoxel.

So I need help to create my mod.

You can contact me in discord : Neyeus#8879

(Sorry if my english is not good, i'm French)