Installing a customized fashionable anti-slip easy clean car steering wheel cover is a simple process. Here are the steps to follow:

1. Choose the right size cover: Make sure to choose a steering wheel cover that fits your car's steering wheel. Most covers come in standard sizes, so measure the diameter of your steering wheel to ensure a proper fit.

2. Prepare the cover: If the cover is made of a material that can be stretched, place it in the sun or warm it up to make it more pliable. This will make it easier to install.
   

3. Align the cover: Align the cover with the top of the steering wheel, making sure the seams are centered.

4. Start at the top: Starting at the top of the steering wheel, pull the cover over the wheel evenly on both sides. Make sure to tuck the cover into the wheel's crevices.

5. Work your way down: Gradually work your way down the sides of the steering wheel, pulling the cover down and tucking it into place as you go.

6. Smooth out wrinkles: Smooth out any wrinkles or bumps in the cover, making sure it fits snugly around the steering wheel.

7. Finish: Once the cover is installed, adjust it as needed to ensure a comfortable grip on the steering wheel.

With these simple steps, you can easily install a customized fashionable anti-slip easy clean car steering wheel cover to protect your steering wheel and add a touch of style to your car's interior.