anotherview wrote:
Crop it to 8x10, to bring down the top edge. Boost the midtones. Use the white brim of the hat to set the white point.
You have a worthy family photograph here.
Let me please suggest you make sure to work from a copy of this photograph, to preserve the original. You may later wish to process it again.
I see my intended suggestion was already made by anotherview regarding the crop.