Visualize the sketch GF

So I made this Gravity Falls sketch that my friend loved and wanted to colour. After that I coloured it as well to see how different our colouring techniques were, and now Anime-Greek coloured it too.

I highly recommend to go to the original pictures to see them in their HD glory:
ORIGINAL SKETCH; MY VISION; IRIS' VISION; ANIME-GREEK'S VISION;

If you want to expand this "Visualize the sketch" thing, just let me know and go over the original sketch to colour it.
Make sure to send me a link so I can add you to this list.