How can you make a Ray Diagram for an Image, with a Convex Lens?

-First, Draw a Ray from the Top of the Object to the Lens, that is Parallel to the Axis -Then make another Ray that Cuts through the Middle of the Lens -The Incident Ray that is Parallel is Refracted through the Principle Focus, so draw the Refracted Ray through F [Focal Length :)] -The Ray that goes through the Middle does NOT Bend -When the Rays meet, you have found the Top of the Object. -IF they Rays DO NOT meet, then Trace the Refracted Rays the Same Direction through the Lens, and then they will meet making a Big Image