Added vegetation and texture to the sycamore tree and a few other minor tweaks. 
The bark coloring on the sycamore tends to a yellowish/brown/grey  (as opposed to the more common greenish/white/grey) and is fairly common in the US Ohio Valley region. 
And the boy is pointing at either a riverboat, a whale or the loch ness monster - never can be sure what's going on in a 10-year-old's mind. 
Appreciate the comments very much!   

****** Crud, just realized I uploaded the wrong picture. Will correct that tonight.
****** Correct picture uploaded