The amazing part makes you seem a tad bit cocky mate.
But you have every right to be so. This piece, just wow. Its stunning mate.
Really the only suggestions I can give you is branch off, explore different subsections of graphics. Possibilities are infinite when you know and continue to learn different programs, and different things in graphics. But for what your doing now, absolutely and undoubtedly phenomenal. Keep it up man. Your future in MPGH graphics is bright.