How can I add 1x4 tile steps to the bottom of the front opening in the gazebo model below? The base of the gazebo is a 10x10 octagonal plate (part 89523). I have tried using wedge and round plates but the studs on the base plate are too wide apart to fit the plates.
I want to emulate the stairs as shown here:
(Source: https://www.flickr.com/photos/kurt-b/52681755904/. Author: Kurayba. License: CC BY-SA 2.0)