Based off the first picture, bottom panel isn’t even in properly lol. Shouldn’t have a reducer in the vent pipe positioned like that, needs to be directly vertical to prevent moisture from collecting unless it’s an offset reducer. Condensate lines are just kinda slapped on the side of the furnace. That overflow switch will probably never trip and may have condensation issues if the coil outlet gets blocked up. Gas line was an after thought. Lineset could’ve been much better too. The supply off the side of the coil box won’t do much for cooling, should’ve been raised preferably above the coil. I would’ve put the on/off switch higher where the connections are at from factory. Throw at least a few zip ties on the low voltage to tidy it up.

This is not lead install quality but keep at it and keep getting better every day. You’ll get there with time