How Can I Make This MoveTo Work?

Always check the roblox wiki as it is very helpful, and to answer your question you can use either of the following, MoveTo is used to "teleport" characters/players as it get's their current character property and moves it to the given location.

wait(3)
game.Workspace.Part.Position = Vector3.new(10,10,10)
 -- this sets the position of the part to the location/coordinates in the workspace BUT, will collide with other bricks if attempted to be put inside a brick
game.Workspace.Part.CFrame = CFrame.new(10,10,10)
-- this also sets the posotion of the part to the location/coordinates in the workspace AND, moves the part through other parts

Also, more information: http://wiki.roblox.com/index.php?title=API:CoordinateFrame