As you can see I'm trying to merge the car with the image. The shadow map can be softened (this is good) but I get artifacting (circled) on the edges and this makes the whole thing look awful.
Also, I can't figure out how to get the reflection into the alpha channel!? Presently the reflection is superimposed on the image -- but while the shadow appears on the alpha (no artifacting either) the reflection is absent!
Any hints tips, or tutorials would be welcomed!
--Bexley