Customize drupal commerce checkout page How do I customize Drupal commerce checkout page?  I selected shipping information, billing information and payments in the checkout form builder. But the layout the fields are customized and was wondering how to change the layout of the fields like First name, last name etc...
Customize Checkout Look and Feel

There was a recent commit that made the checkout process table-less in the Commerce Issue Que. It was reverted in favor of making such a large change to the codebase on a 2.x release. That code still exists and it's all possible using theme_ functions in your template.php


Go here
/modules/checkout/includes/commerce_checkout.pages.inc and look for functions that start with theme_
Add those functions that you
want to your template.php in your theme or a custom module 
Change the function word "theme" with your theme name or module name.
Make an obvious change or two 
Clear all caches and
then go through the checkout process.