This style of flowers is sometimes referred to as 'twisted' or 'rolled'. The link to the instructions to make this type of fabric flowers is below.
For this project, you will need a fabric piece sized about 2-3cm wide and approximately 20-25cm long (the size can vary depending on your project). For the full tutorial, visit here.
You can hand stitch or hot glue some felt or fabric on the bottom of your flower or flowers and attach it/them to a safety pin, hair clip, hair band, bag, necklace etc.