The problem with photos now. is you can't always see the changes. Most are small or minor colour additions.
After adding black material to the second largest tree, I went over some of the smaller ones on the right side with black marker. I was leery of stitching on those smaller ones as I can't see very well when the piece is under the machine. In some spots, that may be enough, or at least it shows exactly where I need to beef it up with black thread.
Again on the right half, each tree has had a dark grey single stitch line, placed down the right side to sharply define the edge.. The last three I used pure White embroidery thread on the left side of the trunks.
Not sure that's enough....................
I did a lot of jumping around today. It was that kind of day.
Almost to the bottom. I cropped this pic so I could see if the "end t'was nigh" for the shrubs. LOL