Complete work on jQuery website app

To complete the minor work required to finish a railing builder app ([login to view URL]). Specifically pertaining to a new function on the left side of the railing sand box (options will be found at bottom of page) which allows for a designer post to be added. Everything is fairly functional but some adjustments need to be made in regard to alignment, formatting, positioning [login to view URL] the sandbox area highlighted in the attached image as well as the with the Step 4 area also visible in an attached image. Adjustments to functionality will be minor if any. Please send any sites that you have worked on before that would display your competence with jQuery, etc. I am looking for a designer who is competent and reasonable, to work on these projects as well as many more on at least two websites that are in development right now.