Nice little plugin but I was really suprised that you've developed a form plugin that doesn't have connected labels.
It's not the first time I stumble upon form labels not used correctly. Apparently not everyone knows that the label should be clickable to activate it's form object. You can try it on a well built form (like the one's inside WordPress) to know what I mean.
A label should always have it's attribute for pointing to a corresponding ID of a form object.
<form> <label for="a">I'm a label for textfield a</label> <input type="text" id="a" /> <label for="b">I'm a label for textfield b … <input type="text" id="b" /> … continuing over here</label> </form>