these are the pixel art builds i've done so far.. i can sadly do no more on this plot due to the fact its run out of room and its already over 84 blocks high hoping for builder rank from these. see the castle in real time, /plot visit -84;18 (megacreative) and when you get to the plot you will see 2 statues and another pikachu.. those were made by my friend, LonelyNightmare (before she changed her username, its now LeEnderMelon)
The Pikachu in the screenshots has no nose :O Otherwise, that's pretty cool! I don't think you will get Builder, since you aren't allowed to have any help on your plot when it's something you're going to submit for a build rank.
Well, if the pixel art is exceptionally good it may get accepted. Someone (I don't remember who xD) did get Builder for a pixel art plot.
