To use DeepL integration in n8n, start by adding the DeepL node to your workflow. You'll need to authenticate your DeepL account using supported authentication methods. Once connected, you can choose from the list of supported actions or make custom API calls via the HTTP Request node, for example: to customize your integration, configure the parameters specific to your translation task, such as source language, target language, and text to translate. After setting this up, you can execute the workflow to see the translation results. Make sure to test the integration to ensure everything is functioning as expected.