Logos need to be legible. This isn't very legible, as the "T" could be a looping "L" or is it a "T"?
The "h" could be a "t" with a loop and a "z" at the end.
At the moment it resembles some sort of needle work with a sowing pin.
You've got grunge detail at the edges of the circle, these won't reproduce well at lower sizes, or across various mediums:
Faxes, business card sizes, embroidered, smaller sizes, foil stamp, em- debossing, et al.
When going to smaller sizes, especially on a photopolymer plate, you are likely to lose detail where the emulsion will simply break apart or fill in because the gap is too thin, resulting in a poor production of your logo. Although printing machines are excellent these days, there are some printers who have not taken the leap into the 21st century with their printing equipment.
Where logos using your signatures are common
https://www.google.ie/search?q=pers...3y7Ab6ooD4CA&ved=0CAkQ_AUoAQ&biw=1545&bih=930
It's not very creative.
Although it's certainly not faux pas to do so.
I just think if you incorporate the basics of logo design you'll have a much better design.
12 Essential Rules to Follow When Designing a Logo | Webdesigner Depot
Most importantly - think finishing at the beginning.
That means - how will this logo be applied to the real world. How will face obstacles like embroidery, fax, email, business card, letterheads, and other formats that your logo will be seen on.
That needs to be considered before you start.