diff --git a/README.md b/README.md
index 6763b91..570f274 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![tm-grammars](https://img.shields.io/npm/v/tm-grammars?label=tm-grammars&labelColor=080f12&color=1fa669)](https://www.npmjs.com/package/tm-grammars)
 [![tm-themes](https://img.shields.io/npm/v/tm-themes?label=tm-themes&labelColor=080f12&color=1fa669)](https://www.npmjs.com/package/tm-themes)
 
-Collection of TextMate [grammars](./packages/tm-grammars/) and [themes](./packages/tm-themes/), converted in JSON format and re-distributed as npm packages. Extracted from Shiki, available for general usage.
+Collection of TextMate [grammars](./packages/tm-grammars/) and [themes](./packages/tm-themes/), converted to JSON and re-distributed as npm packages. Extracted from Shiki, available for general usage.
 
 Packages are **automatically updated and published** every day (if there are changes).
 
@@ -13,36 +13,38 @@ Packages are **automatically updated and published** every day (if there are cha
 
 ### Add a new grammar
 
-1. Fork this repository
-2. Install the dependencies with `pnpm i`
-3. Add grammar source and metadata to [`sources-grammars.ts`](./sources-grammars.ts)
+1. Fork this repository.
+2. Install dependencies with `pnpm install`.
+3. Add grammar source and metadata to [`sources-grammars.ts`](./sources-grammars.ts).
 4. Add a code sample file `<id>.sample` for your language under [`./samples`](./samples). A sample should include a variety of language syntaxes and succinctly capture the idiosyncrasy of a language. Format requirements:
-  - Space for indentation
-  - Less than 100 columns if possible
-  - Link to source in the last line, for example, `# From` https://poignant.guide/book/chapter-5.html`
-5. Generate a [personal access token](https://github.com/settings/tokens?type=beta), keep the default, no extra permission is needed. This token is used to query public information from GitHub API and avoid rate limits.
+  - Space for indentation.
+  - Less than 100 columns if possible.
+  - A comment with a link to the source on the last line (e.g. `# From https://poignant.guide/book/chapter-5.html`).
+5. Generate a [personal access token](https://github.com/settings/tokens?type=beta) with the default permissions. This token is used to query public information from GitHub API and avoid rate limits.
 6. Create a `.env` file and paste your generated token into the file like so:
 ```bash
 GITHUB_TOKEN=your-personal-access-token
 ```
-7. Run `pnpm run fetch` to download the grammar and verify it works via `pnpm run play`
-8. Send in the PR!
+7. Run `pnpm run fetch` to download the grammar.
+8. Run `pnpm run play` to start the playground. Select the new grammar in the left column to verify the accuracy and confirm that the grammar works as expected.
+9. Send in the PR!
 
 ### Add a new theme
 
-1. Fork this repository
-2. Install the dependencies with `pnpm i`
-3. Add theme source and metadata to [`sources-themes.ts`](./sources-themes.ts)
-4. Generate a [personal access token](https://github.com/settings/tokens?type=beta), keep the default, no extra permission is needed. This token is used to query public information from GitHub API and avoid rate limits.
+1. Fork this repository.
+2. Install dependencies with `pnpm install`.
+3. Add theme source and metadata to [`sources-themes.ts`](./sources-themes.ts).
+4. Generate a [personal access token](https://github.com/settings/tokens?type=beta) with the default permissions. This token is used to query public information from GitHub API and avoid rate limits.
 5. Create a `.env` file and paste your generated token into the file like so:
 ```bash
 GITHUB_TOKEN=your-personal-access-token
 ```
-6. Run `pnpm run fetch` to download the theme and verify it works via `pnpm run play`
-4. Send in the PR!
+6. Run `pnpm run fetch` to download the theme.
+7. Run `pnpm run play` to start the playground. Select the new theme in the right column to verify the accuracy and confirm that the theme works as expected.
+8. Send in the PR!
 
 ## License
 
-The grammars included in this package are covered by their repositories’ respective licenses, which are permissive (apache-2.0, mit, etc), and made available in [Grammars NOTICE](./packages/tm-grammars/NOTICE) and [Themes NOTICE](./packages/tm-themes/NOTICE).
+The grammars and themes included in this package are covered by their repositories’ respective licenses, which are permissive (apache-2.0, mit, etc), and made available in [Grammars NOTICE](./packages/tm-grammars/NOTICE) and [Themes NOTICE](./packages/tm-themes/NOTICE).
 
-All other files [MIT](./LICENSE) © Pine Wu & Anthony Fu
+All other files [MIT](./LICENSE) © Pine Wu & Anthony Fu.