Greeting Card - Thread Work

I made this card with Embroidery thread.

Here I tried Geometrical Design.

Things needed :
Old invitation card
needle size 10 or 11
embroidery  silk thread
syringe or pins to make holes on card
scissor
thermacole
measuring scale
pencil
compass to draw circles

I have taken an invitation card and used the wrong side to do this embroidery.
First measured the length and breadth of the card using a scale.
Margins are drawn using a scale and pencil.

Then fixed the center point of the card.
Using a pencil drew a square at the center of the card.
Now marked the center point of the each side of the square.
Then made square of same size at a distance of 1 cm on all four sides of the center square.

Circles are made using a compass at four corners near the margin,

I pricked holes over the card by keeping it on a thermacol sheet using a syringe.
The holes has to be carefully made at regular intervals along the drawing line.
I have used machine embroidery silk thread and size 10 needle.
Done the stitching with single thread only.
The tension to be uniform to get desired result.