How do i make a new instance attached to the player's head a little right from the center?

I am trying to make a part which is attached to the player's head a little right from the center, but i have no idea how to do it, i'd be thankful to get an answer, Thanks!

Here's the beginning of the script:

local dt = Instance.new("Part")
dt.Transparency = 1
dt.Size = game.ReplicatedStorage.MarkAuraB.Size	
dt.Parent = chr.Head
dt.CanCollide = false