To make a reservation for Wangfujing Church, you can follow these steps:

1. Follow the "Beijing Religious Places Reservation Platform" on WeChat.

2. Click on "Reservation" in the menu bar and select "Wangfujing Church".

3. Click on "Reserve a Visit".

4. Select the date, time and number of people, fill in the relevant information, and then click "Submit".

5. Once you have made a reservation, you will automatically be redirected to the "My Reservations" page, where you can view the details of your reservation.

Please note that the above steps are based on what is generally available. If the steps change, please refer to the latest official information and guidelines.