Hey Jenny Welcome to my world. if you were aiming to cut away the background, I suspect you used a low opacity fill ad it overlapped itself. What you may want to use is the "magnetic lasso tool" to make selections of your kitties. it's not as easy as clicking selections, but it ends with a nice crisp product. Also Make sure to have "anti-alias" on
I hope this helps . I like to see a girl interested in graphic design. did you know that some women have an extra unmarked cone in their eye, so they can see colors more exactly than other people?