So a little while ago I made myself a striped sweater with some lace trim I bought at the closing sale of a Fabricland by me for super cheap and an old Zara sweater.
The steps are pretty simple and all you need is a sweater, scissors, lace trim, pins, tape measure, and matching needle and tread.
I made a little slideshow of how you set it up.... that ened up a little big but its still pretty cool
make animated gifs like this at MakeAGif
Figure out the spacing with your tape measure and place pins to mark the spots, its probably a good idea to do this on both sides so that the lines are straight.
Cut your lace trim to the right lengths, I decided to just do it on the front section because thats all I had enough lace for but all the way around or on the arms could be cute too. :)
Hand sew on the lace making sure to keep the stiches on the outside small and hidden in the dark parts of the lace.