How can I make this form look better?

Hello...first of all I love your product on many levels. My only problem is lack of know-how and I'm afraid my forms are not attracting as many conversions as possible. Can you help?

Here's what I've built....I'm open to any help you can provide. 

http://www.imodularbuildings.com/p/modular-building-info-and-price-request.html

In order to make the form to view better, you may consider applying an appropriate theme from the theme-store that matches to your website. If you want to design your own theme, you may consider using Advanced form designer. Please take a look at the following guide with short videos about the features in the Form Designer.

https://www.jotform.com/help/300-Form-Designer-Tutorial-Let-s-create-fantastic-forms-

Hope this information helps!