Here's a lil resource pack to tide you guys over while I'm on my trip. These are all various textures and patterns I painted to make certain scenes a bit easier to render in the comic-- basically I'd import them as a texture, free-transform them to make them match the perspective of whatever surface I needed them to fit, and then I'd paint light and shadows over them to make them fit the scene a little better. This way I'd only have to paint a specific wood or stone texture once without having to redo it every panel. It's saved me a lot of grief while drawing these backgrounds lol.
Since I made them specifically for a black-and-white comic, very few of these have color. However, if you add a layer on top of them and set the blending mode to "color," you can paint your favorite colors on top without much difficulty, and it'll retain the light-and-dark values in the base texture layer.