Finish off each round of crochet stitches nice and neatly by using a slip stitch
1 To close a round of stitches, work a slip stitch into the top of the turning chain. To do this, insert the hook into the top stitch of the turning chain.
2 Then place the yarn round the hook. Pull the yarn through the turning chain stitch and through the original stitch on your hook.
3 You’ve slip stitched the round together! Before working another round, be sure to make the required turning chain. Always work rounds on the right side, unless you pattern instructs you otherwise.