Issue with using UI as custom mouse

I am trying to make a drawing system, and I have a mouse icon, and need to move it (it is a UI) and you could say “use mouse.Icon” but I can’t, because of what I need to do, when I do it it does not place correctly what is the issue?

BrushCricleDecal.Position = UDim2.fromScale(input.Position.X - Canvas.AbsolutePosition.X, input.Position.Y - Canvas.AbsolutePosition.Y + 25)