hower, I followed your link, and there was a picture of you Pop, leaning against the barn...
I've got the rep for being a little harsh at times with my critiquing, so I'll avoid it and give you a little pointer. The reaction above, and of mine spells out that this is less a portrait, and more a profile image. A portrait by definition is an image of facial likeness, and because the face of your father is not a distinct focal point, I feel that this isn't a portrait. In the future aim to capture more of the face and keep the eyes in focus for portraiture.
Thanks for sharing.