How do I add a ‘gfx menu’ to my game? +

So I’m trying to make a photoshoot game on roblox as I’m kinda bored so I’d like to try something new! although I have some little problems:

1. How do I make a ‘gfx menu’ something that would be used to have some effects on screen (or lightning effects) if this makes any sense xD

2. Whenever I try testing out the game some of the parts of the photoshoot rooms/buildings fall apart, how do I prevent/fix that?

3. I would like to have a customisation area where players would dress up to anything they’d like but then when I search up something like ‘super super happy face generator(whatever it’s called :’) )’ it wouldn’t show whereas in some games there are such types, do I have to make a model of it myself or something? If so how?

Also have you guys got any name suggestions for the game? <3 Sorry if this doesn’t make any sense, I’m new to roblox studio so I don’t really know most of the features Ty for reading! Have a lovely day! :D

1: puts effects near the camera so it acts like the gui

2: anchor or weld

3: you could do some face changers, well take the one which doesn't act like a virus

i guess this might help