look up the jessica harris wax paper transfer technique as well
Are you talking about this style?
https://www.youtube.com/results?search_query=How+to+Create+a+Quilted+Pattern+on+a+Cake+
If so, you can also just buy a diamond impression mat.
ohhh I misunderstood what you were trying to do...sorry!
I just did one, I took a tape measure ( one used for clothing to measure the around the pan size, then I took the measurents of the diamond shape from side to side and took that number into the # ( size around the pan ) example my 10 in round pan 32 in around, my diamond shape was 3 inches wide. so 10 around ( just shy of 11 ) here is a photo of the cake I recently did. So I would have had two inches space and I took the 11th diamond and placed it right in the middle of the last space and you couldnt tell it overlapped unless you looked really hard. , attached is the image of the one I did, If that is what you meant by diamonds.
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