Here is my little sweet hear showing her scarf . . . she is so sweet :)
Firs I buy some fleece fabric and only need 1/4 of the yard, this can be with design or solid your choice.
I use a heart design and a solid fleece fabric for mine ones, I cut 1 strip of each fabric measure 4 3/4 inches wide by 33 inches long each, in the rest of my red fleece fabric I cut a heart in my red fleece fabric. (You can make it more wide if you desire it )
after you sew the heart, you put the to strip together and sew them together, leave one end open so you can turn the inside out of you scarf and sew the end.