How do I fix crazy block spasm?

-- Local Script In StarterPack
local plr = game.Players.LocalPlayer
local Mouse = plr:GetMouse()
local Brick = workspace:WaitForChild("Brick")

Mouse.Move:connect(function()
    Brick.CFrame = Mouse.Hit
end)

Is there anyway to make it not crazy but more of simply on the ground, not inside the ground like when you spawn a part it goes half underground.

https://gyazo.com/46bb72b1bb5c8817b9bc05a83fa4e454 PLEASE WATCH THIS IT SHOWS, INCASE IT DOESNT SHOW, ILL EXPLAIN IT SOME MORE

--- Okay so basiclly what is happening is, I made it so this anchored block in workspace, follows my mouses position, but it keeps floating and zooming into my camera, what I want it to be like is like a building game. You guys know those building games where when your about to place something, it has a transparent block of what you selected, to show where your going to place the block, I want it like that. And for it to not clip through the baseplate or plot.