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Your question is extremely vague ^^
How to create the mesh cuts --- for high poly version of this widow and low poly version
https://ibb.co/7kxLsDr
Your question is extremely vague ^^
Dude, first what need you do - learn " how to correctly maked topology on 3D modelling" in youtube many lessons about this.
I recomend for you - youtube channel - Arrimus 3D
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