Love the graphics but not the shirt itself? Try this.
If you have a shirt that is way too tight or maybe is too old but you love the graphics this is a good solution. Especially if the shirt is just beyond hope, for whatever reason. No pics of steps but this is quite easy. Nothing Earth shattering but I thought I would post anyways. The shirt that I transferred the graphics to was one I already owned. So this can be free and green.
Cut graphic off old shirt in the shape you want it to be on the new shirt. Use fusible tape to hold the graphic in place on the new shirt. This will keep it flat and make it easy for sewing without pinning it.
Sew around the edges using the zig zag stitch. I found it to be the easiest to use while trying to navigate the shape o my graphic. It also takes care of the raw edge. That's it! Have fun