To make your website look the same as in your designs, I can take care of converting those designs to Drupal code.

I always try to use SASS and with responsive design as a priority (mobile first), and lately I'm also using TailwindCSS as an alternative to Bootstrap.

I can also create a subtheme of an existing Drupal theme, or create one completely from scratch.

As a best practice, I always try to keep my Twig templates organized in hierarchical directories.

In the same way, I have the SASS files separated in the most granular way possible. All this is to maintain order and facilitate teamwork if there is more than one frontend programmer.