Can someone please figure out what the circular drawing on the picture on the right side of the TARDIS (which I suspect is writing in Gallifreyan as one of their writing types is circular) might say?
According to this Instagram post by the original artist, Lou Wolgast, this was a tattoo concept. As seen in the comments, he believes it's the name of the client.
Circular Gallifreyan cannot be translated effectively, in fact, it's nigh-on impossible. The exact spacing for the lettering is extremely difficult to be measured correctly, and while a series of circles can mean someone's name, one little error can result in the meaning becoming something like sitting on your keyboard. Some day, it may be answered effectively, but for now, it cannot be definitively answered. Sorry to disappoint.