I'm doing a topsy turvy cake with a cupcake as the topper. Should I cut a small cardboard circle for it to sit on? it will be sitting on a 6 inch tier. Also, I plan to carve out the place for the 2nd tier as per the instructions I found on here but should I do it for the cupcake as well? I'm a little nervous. One more thing, I am doing a square, 3 tier wedding cake. I thought I had a 6 in pan in my set but the smallest is an 8 in. Should I just cut the cake down to size? The closest shop that sells that size pan one is almost 40 min away and I need to bake today. Thanks in advance!

I see no need to support a cupcake. If you want to cut a cardboard so it might be easier to remove & serve go ahead.
I would cut down the pan you have - if you can cut a straight line

Thank you so much!

I agree with kakeladi.