It looks like you made a hidden tang knife, but still restricted to barstock dimensions. The knife looks too straight across the spine and into the handle. To my eye, there's too much drop to the tip of the blade and not enough from the middle of the handle to the butt end.
On the bottom line, there is not much continuity or flow from the ricasso area through the guard and into the start of the handle.
On a hidden tang especially, it is wise to consider starting with a crisp, clean defined ricasso area and design/build the knife from there in all directions.
The ricasso is one of the most important areas of a knife yet all too often, its the most overlooked and least considered part. So many important details are dictated by the ricasso.
I agree with you about the pin.