Again, you never cease to impress with your drawings. This is fantastic, if not, PERFECT, because there really are no flaws to point out. Though something you should think about if you haven't already; try out some tonal shading other than floor shadows (because light flows in different directions, not just from up to down). They give your art definition and life as well as emphasis. Though it's not mandatory and it really can't be counted as a mistake, it is something new you should consider in all your drawings.
Other than that, nice work! To be honest, I am a HORRIFIC artist myself, so this is a masterpiece for sure.