I tried and tested your product Here is my review on it.
Good Things:Nice and easy to use, good interface
Now there are some things which I think you could improve upon.
1. Limited functionality: If all I have to do is create a css form there are pretty of examples on web.
in your forms There should be options for different colors, fonts
2. The form does not do anything except generating HTML and css what about extending it to submit it. So your form becomes dynamic
3. You can do undo and redo buttons
Overall rating 5/10
You can make it into a nice product but for that a lot of work is required.
I am a software developer myself so i know you have done a good work on it but really if i were
to use your forms i would want contact form with validation to be more functional and should give me lot of options in terms
of design.
regds.