You share your store URL and admin access (or we set up a development theme). We work in a staging environment so your live store is never at risk. You see previews before anything goes live.
For section builds, we deliver the Liquid file with a complete schema. Colors, font sizes, spacing values, and content blocks are configurable through the Theme Editor. Your team manages content without opening a code file.
For bug fixes and small changes, we can usually scope the work directly after looking at the issue. For larger projects, such as full theme customizations or headless builds, the Diagnostic is the safer first step.