When you've finished your caterpillars, s/c into the top of your turning chain to join and you're off for the final few rounds of single crochet. I started taking it down a stitch or two to narrow it for the fingers. Decrease one stitch in the next couple of rows.
Try the glove on and see where you would like it to finish. I quite often make the mistake of making them come up too far. Very awkward when you're trying to use your fingers. Probably just past the base of your fingers is far enough.
You could just cast off here but I chose to finish it with a row of crab stitch (backwards crochet). Darn in your ends and you're away!