Use some more guardian parts on that Sheikah Slate to finally allow you to draw in it. Sure, you can take pictures like a camera or unlock maps from Sheikah Towers that have just risen from the ground, but now you can actually draw in it! And that is the true magic of the champion - his imagination!
Saving Princess Zelda can wait! Plant yourself under a tree and start drawing in your new Breath of the Wild Sheikah Slate Sketchbook. Fill with plenty of blank pages for you to draw all of your favorite Legend of Zelda related things. The only limitation is your own imagination! And maybe the durability on your pencil.