I started with this plain blue sweater. I liked it ok, but I have another one that is the same color that I like a lot better. So I the same process as I used HERE I shortened the sleeves. The only difference is that I sewed with the raw edge on the indside of the sweater instead of on the outside (like I did on the sweatshirt).
I wanted this to match my favorite skirt (which is pink and blue), so I used an old t-shirt and made some pink rosettes. You can kinda see the hot glue in the picture, but not in real life (I hope).