My big old fat cat, Smudge, is an excellent model - he rarely moves and sleeps all over the house in various positions. He is a "Cadillac Cat" or a "Tuxedo Cat" - and I think that means he's black and white and has a lot of room in the back end (which is true).
Have you ever heard of horror vacui (vack' wee)? Apparently, it is a condition where you have a fear of empty spaces or emptiness of any kind. In art, it refers to the compulsion to make marks in any and all available space. Playing with that below - doodles filling space.
Missing color, I've begun my next 3-color challenge painting but it's going to be slow because I'm going to glaze the colors, letting each layer dry before going back to it. (If you have not purchased Daniel Smith's Rhodonite Genuine, you should. It is a gorgeous pink and can be as pale and soft as a baby's cheek or as deep and snazzy as a flamingo's feathers. The photo I took of the 3 colors didn't really do it justice - but I think this first glaze of color is closer to the real look of the pink.