Ann Logan

I assume that you yourself understand this, but still I will say. It is very important to wash your hands before touching the fabric or thread. Of course, you are going to wash the finished cross stitch design, but why make it dirtier?
In case you use a thread or fabric that is hand-dyed wash them in advance so that they do not stain your handwork.
Unwind your thread from time to time. Just leave the needle and let the thread loose - it will unwind itself... Or help it a little to unwind.
Do this every few stitches, otherwise the texture will be uneven and the fabric will show through your stitches too much.

Embroidery needles used for cross-stitch are often called cross stitch needles or tapestry needles.
Cross stitch needles come in different sizes depending on thickness. Most commonly used size is 24. It is the best choice for stitching on 14-count aida.
A tapestry needle is a hand sewing needle with a blunt end and a large eye.
You don't need a sharp needle to use with an open weave like Aida.
The rounded tip of a tapestry needle is important because it helps to ensure you don't accidentally pierce the threads of the fabric.