Make a bouquet or just a single rose, this tutorial from Dozi.
The kids and I had a blast setting up this 'rose bush' for our dining room. I believe we will be making many more of these in the future. In my experience however... I do think you need glue dots. I tried with tacky glue and with glue sticks, and they just don't really work unless you like holding them until they are dry.
It turned out so pretty though!