I started looking on Pinterest, maybe an idea would come to me? I saw a really cute one from a man's shirt and that's where I started. I wanted mine to be a little edgy but with some bling or girly stuff though.
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The ring off of a koozie. You can still use the koozie this way for a larger drink bottle.
A man's shirt. Of note I couldn't find an old shirt that was the color I wanted, so I did by this size 2X shirt at Walmart. An old dress of mine that I used to make the flower and a piece of old lace is laying on top of the shirt and dress.
An old shirt that I cut the lace off of the collar, just like what is going down the front of the shirt.
Cut one of the sleeves off of the shirt.
Cut from the underarm sleeve straight across. (Photo1)
Turn the top of the sleeve over onto the inside of the sleeve about 1/4" and using a zig-zag stich, stich the top of the sleeve. (Photo 2)
Place the ring of the koozie onto the top of the sleeve and hand stich the sleeve over the koozie ring. (Photo 3)
I used part of the bottom of the shirt hem to make the loop that is sewn onto the back of the sleeve. (Photo 4)
Optional at this point: (Photo 5 and 6)
I stitched on the lace from the white shirt onto the cuff of the sleeve and made two flowers (lots of tutorials on Pinterest on how to make flowers) a black/white flower and one from leftover black lace.
I did place a button on the sleeve placket.