add "how to use the space" information

README.md

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   https://cdn-uploads.huggingface.co/production/uploads/635a365b1e74f86419b268e4/ypxnsyqjikgOFvpd_LJeo.png
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+# Background
+
 Digital mental health services offer low-threshold help. Keeping an overview of digital mental health services is challenging. Web scraping and generative artificial intelligence can help evaluate digital mental health services.
 
-This project in 2024 is the collaboration between [DSSG Berlin](https://dssg-berlin.org/) and [Ama Mind](https://www.ama-mind.info/en/). The application is available to collaborators and staff through the huggingface joining option.
+This project in 2024 is the collaboration between [DSSG Berlin](https://dssg-berlin.org/) and [Ama Mind](https://www.ama-mind.info/en/). The application is available to collaborators and staff through the huggingface joining option.
+
+# Using the Application
+
+Please duplicate the [Service Evaluation Application](https://huggingface.co/spaces/DSSG-AmaMind/service-evaluation-app), to use your own instance in your private Hugging Face account. **Make sure you replace the `HUGGINGFACE_TOKEN` environment variable with an access token from your Hugging Face account**. This token is required to access the model used in the pipeline. 
+
+Additionally, note that the **Gemma-2 model** (`gemma-2-2b-it`) is used in this Space for evaluation. Before proceeding, accept the terms and conditions for using Gemma-2 on its official page: [https://huggingface.co/google/gemma-2-2b-it](https://huggingface.co/google/gemma-2-2b-it).