I drew it on paper, and scanned it to get good quality, but it still looks way brighter than it really is. Don’t worry - I did shade the outer walls!
A million thanks to Grant for this course, I never thought drawing would be this much fun! I initially bought it to complement the 3D course, as to be able to draw reference images myself, but I might just drop 3D in favour of 2D! Hahahahah! Just kidding, though. Much appreciated!