Sizing up your blocks

Math never was my favorite subject.  It requires lots of thinking for me, and makes my head hurt.  For the quilt I am currently working on, I wanted two different sizes of an 8 pointed star.  I tried drafting my own.  Now, normally I am really good at drafting blocks by hand.  With this one, not so much! 

I finally resorted to finding a pattern online on the website of a quilter for whom I have a lot of respect and know personally.  I won’t share her name here, though.  So I found the pattern for the 8 pointed star on her site, in several different sizes.  I chose the size I wanted, and made the block.  I wanted a six-inch block.  I ended up with a 4.5 inch block.  SIGH.  I took the pattern to a copy machine and increased it over and over in a variety of sizes, and took the stack of copies home.  After much pondering, I chose the pattern that I was sure would give me six-inch block.  Nope.  When I made the block, it was 8 inches.  MORE SIGHING.  After several more tries, I finally hit on the right one.  So now I have many different blocks in a variety of sizes but all in the fabrics from my quilt.  It allowed me to see how the different color choices would look, so it wasn’t a total waste.

stars

Please tell me I’m not the only person who does this?