Editing my Images for my Poster

Due to the fact that none of my renders are working and I was really stuck for what to do, Ant has suggested that I edit the images for my poster straight from sketch-up. He has given me a couple of tutorial sites that I could follow for doing just that, however after spending a couple of hours watching and trying to implement the tutorials I have come to the conclusion that they are best suited for exterior renders rather than interior. Any who, after some time and a rather large frustration with the computers I have been able to come up with a render technique that is aesthetically pleasing and that I can replicate across my different perspective views.

They are as follows: