Hi Andrea. I think your block is lovely and your machine embroidery looks good.
My embroidery thread is 3 strands of Coats & Clark hand embroidery floss (That was all I could find in Arizona when I was looking for floss in March). Don't ask me why I used 3 strands instead of two, because I don't have a good reason, but I do like it.
Yours is looking great. Keep up the good work.