This tutorial shows how to create and optimize production-ready game VFX meshes using only Unreal Engine 5’s Modeling Mode and UV Editor—without any external 3D DCC tools (such as 3ds Max, Maya, Blender, etc.).
https://dev.epicgames.com/community/learning/tutorials/xd4Wz/creating-production-ready-game-effect-meshes-with-unreal-engine-5-modeling-mode
this tutorial looks very informative, but the subtitles are not in English! due to this major portion of the tut is not understandable.