Ann Logan

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.

In cross-stitching correct tension is important. Having too strong or too loose of a tension can totally destroy the impression of your project. The threads should be flat against the fabric you are using, but not too tight, so that they are actually pulling the fabric in any way.