I use the seamless join whenever I finish off circles to ensure that the edges look nice and smooth (e.g. crocheted eyes and noses). The seamless join is also very useful when finishing off crochet projects that are not circular (like a granny square).
The way the seamless join works is that it creates a false stitch on top of the first stitch of the next round. Having the false stitch on top of your first stitch lifts that edge up slightly so that there is no longer a significant height difference in your stitches.
Watch the video below to learn how to do this:
STEP BREAKDOWN
Step 1 – If you haven’t already, cut your tail and fasten off.
Step 2 – Thread the tail end of your yarn onto a darning needle.


Step 3 – We will be skipping the next stitch and instead we will be working into the second stitch of the round.
Step 4 – Insert the needle under the top of the second stitch, making sure to go under both legs of the stitch.


Step 5 – Pull the needle through and tug on the tail lightly to tighten the gap.
Step 6 – We will now need to insert the needle through the center of the last stitch of the round and out from the back.


Step 7 – Through the center of the stitch and out from the back, pull through.


Step 8 – Lightly tug on your circle to adjust the tension of your seamless join.

Step 9 – If you do not need to leave a tail for sewing, weave details in and trim off the excess yarn.

You have just made a seamless join in the round!
Oh my gosh! This is a wonderful technique and so simple that even I can do it. Beautiful! Thank you so much for sharing.