Create new project in MS Project Server

Launch MS Project Professional by connecting to MS Project Server
On File menu -> New
MS Project displays a blank project
On Project menu -> Project information
On Project information dialog box, please enter Start Date
Choose the Calendar to be used (Standard is the default calendar, if you have organization or project specific; also enter, if you have any organizational specific mandatory custom fields.
On File menu -> Save and provide project name. Default version of the projects in MS Project Server is published
Click on Save

Now you can start building the project schedules (tasks, resources and assignments) on this project plan

Create new project from enterprise template

Steps:

Launch MS Project Professional by connecting to MS Project Server
On File menu -> New
MS Project displays a blank project
Click on “On Computer” under Templates
Click on templates/general tab to select the project template
On File menu -> Save and provide project name. Default version of the projects in MS Project Server is published; Choose the Calendar to be used (Standard is the default calendar, if you have organization or project specific; also enter, if you have any organizational specific mandatory custom fields
Click Save

Modify the schedule time line and tasks as per your project needs.