-in the beginning to wake sans up, press "space" on your keyboard. -when sans says "when you hear a bird's chirp, open your eyes and stop" press "a" on your keyboard to begin your relaxing session. - when you hear the chirp sound, press "b" on your keyboard to see the end.
I found sans himself on google, and just drew in his eyes. the background is from scratch. Music: Maz Nimra - Ambient Chillout I found the music on this website: https://natentine.com/ (copy and paste into a web browser.)