Step-by-Step: "How to Create A Revit Line Style"
1. Open your Revit template file.
2. On the Manage Tab, select the Additional Settings tool, then select “Line Styles”
3. Click the “New” button in the lower-right and type in the new Line Style name.
4. In the Line Styles dialog,
a. Select the Line Weight
b. Select the Line Color
c. Select the Line Pattern
5. Click the OK button.