apartment interior sketch

This interios design sketch was commissioned to me. Here is the process.
all interior design was conceptualized by Taller 101 de arquitectura.
This sketch used a perspective grid as reference to trace the layout. The grid was done by me using sketchbook pro app and then printed on 17"X11" paper


art supplies used:

Paper: layout paper A3 size Daler Rowney
Markers: Copic markers warm grey 1 to 10, cool grey 6 to 10 and B95 y B97, prismacolor marker oatmeal, khaki, bronze, warm black, touch markers, blue grey 5 and 7, old pantone tria warm grey 1 to 10, 5493, 399
Liners: KE 0.3, paper mate flair M
highlights: molotow one4all 127 HS-EF
prismacolor pencil black, warm grey 90%, beige, white