This was my second tank top attempt. The first I did down lower and she did not like the way it hung on her. It was also right where her hand would swing. This one I did a little bit higher and right under the arm area. 

I started with a button hole so she can loop her tube through. 

Then I made a pocket. 

Then I put a flap on the top to help keep it in. 

Previous to this she had a fanny pack sort of thing, but I realized she didn’t like it because it was so big. So I attempted to make a smaller one just the size of her pump.

She liked this one much better. She even forgot she had it on.