Totally get where you’re coming from! Visual regression testing can be a bit tricky, but focusing on a single story is a smart move, especially with a big Storybook. Here’s how you can narrow it down.

First, you’re right about the `–story` flag! When you run your Loki tests, you can specify the exact story you want to test. Just use it like this:

loki test --story YourButtonStory

Replace YourButtonStory with the actual name of your story. This will run tests only for that specific story instead of the whole Storybook, saving you time!

Now, about those different states of your button (like hover, active, disabled, etc.). You can definitely capture all these states without writing separate tests for each one. Loki is pretty cool in that it can generate multiple snapshots for the same story when you define them properly in your Storybook. Just make sure you’ve set up the story to handle these different states. Usually, you can use `.add()` for each state under the same story:

storiesOf('Button', module)
    .add('default', () => Default)
    .add('hover', () => Hover State)
    .add('active', () => Active State)
    .add('disabled', () => Disabled);

Then when you run the Loki tests, it should capture each of those states as separate snapshots.

As for best practices, I’d suggest:

• Run tests frequently, especially after making changes to your components. It helps catch visual issues early!
• Use descriptive names for your stories. It makes it easier to identify what you’re testing.
• Keep your tests organized and clean; it’ll help when you scale your stories later.

Avoid pitfalls like not having enough test cases for your states. If you only test your default state, you might miss visual bugs in others!

Hope this helps! Visual regression testing is a learning curve, but once you get the hang of it, it can really streamline your process!