What an attractive pair! I like the dof here...blurring out the fall leaves so the viewer only "registers" the colors...which compliment the skin tones of both subjects quite nicely... as does the neutral clothing both are wearing. This is a well-thought-out portrait and I think you should enlarge and print and frame it.
You do know that this site strongly discourages snapshot images? Fortunately this isn't even close to being one of those. This is a superb portrait with great colors and the perfect DOF for the subject matter - who are both very cute by the way. Excellent work you've done here and if it's not hanging on the wall in several family homes soon I'd be shocked. Well done, Grandpa -