Hi dillster . Thanks for your query. I have used a simple Hdri set up out of the refernce images i took randomly since i couldt shoot an HDRI...which was used for indirect lighting and as a direct light i used a Directional Light taking the color and intensity reference from the images. As the ground plane i used the MATTE SHadow shader which is not there in the mental ray shader library by default so ran a small script for that. AirPlane had a normal 2k texture and all the render passes i took are there in the making but used additional few RGB matte passes for compositing control. Thank You.