Get in closer Crop the image Enhance Photo tools Edge Preserving Smooth Retouch Palette > Saturation Up repaints the trees to intensify their colors

Fading edges Selections > Select All Selections > Modify > Contract > pick a number Selections > Modify > Feather > use that same number Layers> Promote to Layer Flood fill that lower layer with any color you'd like your image to fade into. File> Export> Jpeg Optimizer > Save as a JPEG with compression of 15-20