Thanks for all the positive feedback everyone I'm playing around and trying to find my style. Super fun!
Most of the texture you're seeing is Liquitex Gesso. I used lots of different mediums, though. Prismacolor pencil crayons, Peerless watercolours, White Gelli Roll pen, and a bit of acrylic paint. This was also done in my art journal that was made with glueing pages together in an old book about trees.