Mamluk peacocks - Embroidery chart

Mamluk embroidery, 1250 - 1517. The original was linen embroidered with blue silk in pattern darning in running stitch.

Peacock from page 41 of "Embroideries and samplers from Islamic Egypt" by Marianne Ellis. Most (?) of the items come from the Ashmolean Museum The items cataloged in this book can also be seen here.

My first ever attempt at charting a pattern. Rather than make the 'weave' square, I have elongated the x axis as the original pattern was sewn over two threads of the ground fabric and the x direction was slightly wider than the y. I'm sure this has something to do with the tension / set up of the loom but this is an area where I completely lack for knowledge.