When I was a maturing ankle-biter in the late Sixties and early Seventies I wrote to magazines and comics on occasion.
More often than not it was about a back issue that I was missing rather than a critique of the current issue.
As far as I recall I didn't enter competitions either but my memory is sorely in need of an external hard drive to reboot it!
I did write to Film Review asking if they were planning on a Bruce Lee cover, which they obliged me and many other young shaolin monks with in July 1974. I was 13.
Did you write to magazines and comics readers or enter their competitions? Did you get a reply, get published or win the comp?
ZZrobot has kindly sent me his letter which appeared in Spider-Man #111.