So here's the completed version! It took longer than I thought since I started experimenting, haha. I also posted the work-in-progress/line art version earlier today. (Edit - also posted the original drawing I did last year; this is a re-drawing of it) I'm glad with how it turned out! I wish she looked a little happier though (the lips are too dark!) But it's fine.
Materials used - MUJI sketchbook (A4 size), mechanical pencil (HB lead) for initial sketch, Faber-Castell PITT pens (XS, S, M), Carioca dual tipped markers, MUJI hexagonal markers, MUJI lime green pen (0.7 tip), COPIC sketch markers and one ShinHan art Touch marker (for skin), and two vintage Prismacolor markers for the background and the text on the bottom (also used a red Sarasa pen for the 's').