New glasses and flower appliques

I had to make myself happy with a little something something today. I picked up my new glasses. And although i use them only early morning and late night, the rest of the time i use contacts, i just don't feel pretty right now. I have to get used to them since i haven't had a pair of glasses in a long time and now it's making me nauseous too...
The optician happens to be close to a market where i don't come often so i strolled and found these gorgeous embroidery appliques. They look like iron on, but they aren't.
Does anyone have a tip for me how to best use these? Do i have to sew tiny stitches all along the sides? Do i use fabric glue (never a really big fan of)?
For now i just have them to look at and be happy about.
Forget about the glasses.