– A trickster, this picture is! You have the word It’s written vertically, but you have to read it from bottom to up to understand it. Next to it there are two YOU words in green. Color coding doesn’t matter here, but positioning and counting are of essential importance. You can read this picture like this: “It’s up" (because the word is vertical and readable from down to top) and “to you", because there are two YOUs in the picture.
– The puzzle may be hard to break, but the expression is common and doesn’t need much explanation. When things are up to you, it means you decide and you make the call.