This was done on ordinary cartridge paper with a 2B pencil. I only ever use a 2B. I prefer mechanical pencils and I use a 0.7 lead, they don't break so easily. Nowadays I prefer to work on Bristol Board.
Wait, for a second there i thought you said simple.... oh geeeeez you did! Lol, jk But this isn't exactly "simple" as one might say. "Simple" is the owl layout i made this is not. Love it by the way<3 I'm like a giant owl fan. Huge owl fan actually. I love your work.