README updates

README.md

@@ -36,10 +36,12 @@ packages:
 3. Add an on-run-end hook to your `dbt_project.yml`: `on-run-end: "{{ dbt_artifacts.upload_results(results) }}"`
 (We recommend adding a conditional here so that the upload only occurs in your production environment, such as `on-run-end: "{% if target.name == 'prod' %}{{ dbt_artifacts.upload_results(results) }}{% endif %}"`)
 
-4. Create the tables dbt_artifacts uploads to with `dbt run-operation create_dbt_artifacts_tables`
+4. If you are using [selectors](https://docs.getdbt.com/reference/node-selection/syntax), be sure to include the `dbt_artifacts` models in your dbt invocation step.
 
 5. Run your project!
 
+> :construction_worker: Always run the dbt_artifacts models in every dbt invocation which uses the `upload_results` macro. This ensures that the source models always have the correct fields in case of an update.
+
 ## Configuration
 
 The following configuration can be used to specify where the raw (sources) data is uploaded, and where the dbt models are created: