Sewing Finished Pieces Together: Tips and Tricks?

Dear users, dear designers,
how do you handle sewing pieces together?
Do you have any tips and tricks?

Does anyone else have anything to add?

I rarely sew knitted or crocheted pieces together. Most of the time, I crochet them together or sometimes knit them together.

For the sleeves, I pick up the side stitches and knit them on.

Knitting pieces together is easier than you might think. For example, at the shoulder, I leave the front and back stitches on the needle. Then there are two options:

Either you knit the front and back stitches together. Or you alternately pick up the front and back stitches onto a knitting needle. Then knit 2 stitches together and bind off as usual. This also results in a neater seam than sewing them together.

Here are a few photos to illustrate:

You can see it clearly here because the front and back pieces are different colors. The stitches are picked up alternately onto a needle.



Here, the front and back stitches are knitted together. You can also already see the bound-off stitches here.



And this is what it looks like from the outside—you can’t see any seam:

I currently prefer to sew knitted pieces together as shown here. I’ve shown it here using a contrasting color (pink) so you can see it more clearly.