Whoaaaaaa huge piece! haha it might just be my internet connection, but this one took forever to load for me.
Looks like you drew it traditionally before scanning it into the computer though, so kudos for uploading art you drew on paper! I'd say the frame + gate really compliment the whole piece.
I actually just started using photo blue pencil for my traditional work and I find it works wonders when I scan it into the computer to colour later. Your inks show up just fine and the blue pencil becomes nearly invisible! Just gotta tweak the brightness+contrast and voila!
Anyway, good work and happy belated halloween!