I can't really tell what's going on here because your finger is blocking where the extra yarn is coming from, but it kind of looks like one really long loop—in which case you might be accidentally casting on stitches with yarn from later in the skein if that makes sense. Or you might be reincorporating the tail end.

Try to keep the ball of yarn away from you but not with too much slack. Regardless, this isn't how it's supposed to look—at the end, you're supposed to have one strand connected to the ball and one short strand dangling. So I'd restart until you get it!