Creating virtual environments on Windows can be challenging. (There is an easier way on Linux and Mac.) When on Windows, PyCharm can help you set up and manage your virtual environments.
If you don't already have it, get the free community edition version of PyCharm.
To create a new virtualenv, go to File -> Settings, and search for project interpreter like in the screenshot below.
Look for the gear icon on the top right:
Click the gear, and choose what you want to do:
When you create a new virtualenv, it will look something like the screenshot below.
The next thing to do is install any required packages. Look for the plus sign on the right:
You can then search for the needed package and install it:
More information here.
If you have any questions, leave a comment below.