If you can sew, it would help to sew the side seams in a little so they come in at the waist, like an inch and go gradually back out (up and down), so it's body skimming. Also, if you can cut that crew neck out and cut a v-neck in the t-shirt and just hem it over, it would look more feminine. I did that to couple of t-shirts and it came out nicely. At the bottom of the v, you can pinch the fabric at the top inch or two and sew it together like a gather, and it looks real nice.