Bullion knots are a slightly more tricky stitch to master, but well worth it for their effect!
Long and short stitch is an excellent filler stitch you can use to blend colours together. Here's how to do it!
Split Stitch is great for creating smooth, curved lines without leaving gaps between stitches - and it’s easy to do, too!
Couching is a useful way to add textured lines to your pieces - and it's fairly easy to create, too!
Coral Stitch is a great stitch for adding texture and interest to otherwise straight or curved lines - it can be a lovely (more complicated!) substitution for Back Stitch.
Feather Stitch is a great stitch for adding borders to pieces, and is able to fill fairly large spaces with a gorgeous textured effect.