How do I get the model to be in the LeftHand?

Trying to get a Katana in the player's left hand, but the sword is just vertical in the arm. Script works fine, just wondering if anyone knows what I should change the CFrame to. I can't use a tool grip editor as the thing i'm trying to equip in the hand is a model, not a tool. I am also making it compatible for both R6 and R15

(Here is what it looks like) https://ibb.co/16nrPPH

local rp = game:GetService("ReplicatedStorage")
local Sword = rp:WaitForChild("Sword")

local cframes = {
    ["Left Arm"] = CFrame.new(0,-1,0),
    ["LeftHand"] = CFrame.new(0,0,0)

}

^^ Not the whole script just the cframes table