Took a bit to get the hang of the flow. Learned the second time around it is like putting on drywall mud. The more you try to improve it to look better the worse it gets. The product worked well when I checked it under a light for any holes. Pictures of before and after it was filed down then painted.
Looks like you did a vertical repair and it turned out pretty well for your first one. Vertical is more difficult than overhead or flat but follow the instructions and practice. A video of a similar repair https://www.youtube.com/watch?v=lhfWqD8Iawo