the lighting seems a bit off you put the flare to the right and the lighting on the render is coming from the left blur the background a bit to create depth and sharpen the render a bit to create a bit more depth.. also as opposed to using the lens flare for lighting try using a circle gradient that goes from white to transparent and set the layer mode to Soft Light imo lens flares are bad for lighting =x also try to blend the render with some effects or something basically you have a background with a render thrown onto it and a pen tool don't get me wrong you are still getting better just these are some cnc's