Techne,Mobs Moddeling Help {Terraria Mod}

hello! I have a Terraria Mod and i would make 3D Mobs but my Pc can't run Techne etc. Just Mr Crayfish Editor :/

When you can help me,Pls make this models:

Demonic Eye

Eye of Cthulhu

Twins

King Slime

AANNNDD

Skeletron :/:/