How to The following list describes the steps to take to participate in the CDS App Challenge after signing up. Step 01Choose which clinical model to create and make sure it does not already exist in the gdl-guideline-models repository. Step 02Create an account on GitHub if you don’t already have one. Step 03Fork the gdl-guideline-models repository. A guide on forking repositories can be found here. Step 04Create a local clone of your fork. Use for example GitHub Desktop. Step 05Create your clinical model consisting of archetype(s), guideline and a test fixture (tutorials can be found here). Make sure to re-use already existing archetypes as much as possible. Step 06Add the new archetype(s), guideline and test fixture to the corresponding folders in your forked repository. Archetypes should be added to gdl-guideline-models\archetypes Guideline and Test fixture should be added to gdl-guideline-models\gdl2 Step 07Make sure the clinical model still does not exist in the common-clinical-models repository and that your model includes the following: Information in all meta-data fields (under the descriptions tab in the GDL2 Editor) Reference to at least one scientific publication Relevant test cases (minimum three test cases in your test fixture) Step 08Push your clinical model to your local master branch and create a pull request. A guide on creating a pull requests can be found here.