Custom FPS camera?

So I have this, how would I make it so when in first person my camera is in front of the face or a bit forward and how would I make it so my camera couldn't look down fully just like 75 degrees or something

 local player = game.Players.LocalPlayer
local character = player.Character
game:GetService("RunService").RenderStepped:connect(function()
    character["Left Arm"].LocalTransparencyModifier = 0
    character["Right Arm"].LocalTransparencyModifier = 0
    character["Left Leg"].LocalTransparencyModifier = 0
    character["Right Leg"].LocalTransparencyModifier = 0
    character.Torso.LocalTransparencyModifier = 0
end)