Frostbyte - That looks very nice!
Big pieces can seen very overwhelming and take a long time to finish.
Good job!
I like to focus on the rudimentary techniques myself.
You should try something less complicated for your next piece.
The limitations I like to give myself are - use only black and white or use less that 4colors -
and work within a limited space -
usually 8x8pixels, 16x16pixels, 32x32pixels, 128x32pixels(fits within adventure.gb), or 128x128pixels(fits within GlitchNES).
Then if I make something that looks really cool I can easily place it into a GB or NES ROM.
Sometimes giving yourself restraints pushes you to be more creative.
Someone that I look up to once told me "Practice the rudimentary techniques endlessly."