I like to start on the bottom or straight end. Put a little dab of hot glue and hold a corner of the fabric over the end.
Wrap the fabric or ribbon on the diagonal, being careful to overlap each wrap so the plastic cane doesn't show through. When you get to the end, put a little hot glue on the tip and fold in the fabric. Trim as needed.
Here are several that I finished up earlier today.
Now, if you didn't stock up on the candy canes during the holidays like I did, just be patient. Put this little tutorial on your pin board, or bookmark it for later. If you can't find candy canes on line right now, the dollar store will start selling them again in October.