Art?

I've tried something new for my great-grandchildren.  Hidden in the squiggles is a message that I hope they can find.  I put two up recently and my granddaughter was able to find the message for her son too quickly.  Here are the original and the message.

How old?

Tomorrow my body turns 81 years of age.  My brain isn’t so sure.  Sometimes, it’s 16 and dishing up ice cream cones at Bowker’s Dairy in Rochester, New York.  Or it’s 58 and hauling a travel trailer into the Valle Del Oro park in Mesa, Arizona.  Wait a minute, it’s really 21 and in a cap and gown in Stillwater, Oklahoma, waiting in line for that diploma.  Oops, it’s 35 and camping in the Adirondack Mountains with my brother and our sons, looking for the elusive trout.  Well, actually it’s 80 and waiting for all the fireworks to celebrate the eve of my birth.  Happy Fourth of July, everyone.  How old is your brain?