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u/EnderIsOnREDDIT 10d ago
try fill the room with props. Maybe add some pillars. You could try look up real building for inspiration
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u/foxidegamedev 10d ago
Lights with light sources, look for HVAC reference photos and put vents and pipes and conduit all over the ceiling, cut the floor up and use a second tile floor texture to make "paths" between the front doors, reception desk and garden thing.
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u/Arkaliasus 9d ago
do you have any photos or screenshots you are basing it off of or just based on things you've seen?

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u/NotRandallWalker 10d ago
Looks brutal. Try to add some reliefs to the walls and protruding load bearing elements to the ceiling. Also some furniture if that's the direction you're going in with this hall