I hope more people start using Elmers Washable School Glue to help hold tricky seams, binding and keeping bias cuts manageable while sewing them.

Here's one reference:

http://piecebynumber.com/partial-seam-technique/

That I did not need to use "exactly" matching thread for piecing. Actually, unless for top-stitching, "exactly" matching thread is seldom necessary for many other sewing projects.

Oh my, over 35 years of quilting and teaching I have found, developed, stumbled on, and heard so many trick/tips/techniques I could (should?!) write a book!!

Trying to think of one I haven't already shared here in the years I've been a member....
Here is a quick way to make quarter-square triangles. I often use this to make use of leftover HSTs that I'd rather put to another use.

Jan in VA

When sewing a snowball on the end of a strip. Mark your line, but be sure to sew one to two
" stitch " lines over from your marked line on the piece you are going to cut off. Just need to allow for the fold line or it will be a tad short.

This might help people who can't iron straight. lol like me.
I made a new cover for my ironing board using a striped material. When Ironing a strip of fabric, I use the lines to make sure the strip is straight, just like you would do on your cutting mat.

Donna Jordan's use of the long ruler to keep fabric straight on the ironing board. Now I have straight lines, no more curves.

I liked Missouri Star’s video about sewing two charms together along the sides and cutting them in the middle. Then add another piece to one of them and sew it into a four patch.

Making hst's oversize and then trimming, strip piecing, chain piecing, leaders and enders, ironing seams to one side.

Going old school and learning to pull a thread and then using scissors to cut long sashings and borders. What a revelation!

I despise rotary cutting. Over twenty years of quilting I still can't rotary cut without the dreaded "v". Now my rotary is only used to trim units and blocks.