Leaping arch problem

[Diyermaker]

I have made leaping arches a couple months ago and when I completed them I discovered that the were like 1 1/2 feet tall… whoops. I don’t have the time to remake them. We get around 1 ft of snow every winter, so does anybody know how I can raise them 1/2 a foot so the viewers can see them?

 

[Diyermaker]

Thanks, that would work!