Here is my first try at interior scenes. 1.1 million verts, 30,000 particles. Didn't come out as good as I wanted, but I'm getting there. I tried to go all procedural materials, but got lazy near the end. Image textures are the front book cover, two front pillows, fireplace marble and the floor. All other materials are procedural. Thanks to ElBrujo for showing me how to use textures well!
Cycles render: 1000 samples