This Millennium Falcon piece is by the Chalktwins (Devon and Lexi Fulmer) and is part of their spaceship series with the Falcon being number four.
As you’d expect from a chalk drawing, the colours are vibrant and quite lovely. The original is 2 ft by 3 ft and is chalk on board, but you can buy a postage friendly 12″ by 18″ print at their Etsy shop for only $25 or a 6″ by 8″ print for $10.
The others are the USS Enterprise, Serenity and the Swordfish II. (They’re currently working on the SS Normandy.)
Check out their DeviantArt page where you can download a massive 11MB file of this beautiful drawing.