One day? Quit making the rest us look bad you ass!
But in all seriousness this really is fantastic work. I would certainly be very proud of it, as should you. The coloring is great and I really like your color choice for the lighting. The purple highlights really help this drawing pop. The detailing is nice as well, especially with all the small dents and scratches in the armor.
5/5
10/10
I'm amazed by your talent.