Would this be considered child pornography?

So I was showing a photographer friend artistic nude shots of myself that I took when I was a preteen/teenager and never showed anybody before. I am an adult in my early 20's now but (and I know this sounds silly) I was wondering if pictures of my naked preteen/teen self would be considered child pornography even though I myself am no longer a child. He was thinking of putting them on his website art gallery but I don't want him to get into legal trouble.