What about this photo makes you want to frame it specifically? Is it a special place or moment for you?
The reason I ask is that there really isn't a lot of emotion or character in this photo (although Im sure you see it because he is your son).
Although it is a sweet picture it just doesn't seem like a standout shot to frame. There are also some super blown out highlights on his back. You could crop that out depending on your image size...
i think if you love it and it captures your child for you, frame it! Not every photo has to be one way or follow rules, some just need to capture a little bit of personality.