As I wrote before, look at your local markets and thriftstores for nice and old lace.
And for the shirt, I do not know about you, but I did struggle to find the perfect basic before I looked into the man section. It has to be cropped but afterwards I have a perfect shirt for nearly nothing.
1. Decide on the length of your shirt and cut along after adding 2 cm for the seam.
2. Fold your edge twice
3. Choose the zig-zag stitch
4. And sew along!
5. Decide on the needed length for your lace trim.
6. By pinning along the edges you can mark where to cut. Cut along the middle, as if you are following your spine and along the end bit, so its a bit like a cupboard front.
7. Open your "cupboard" pin down your sides.
8. Lay the lace on top and sew along the edge.
Pretty easy, aye? I love how subtle the effect is and I am pretty sure I will wear this shirt pretty often. As long as the sun comes out at least.