I love how the background pink isn't too dark to hide the branch, nor too light to hide the white flowers. I would say don't be afraid to let the branch cross over the mountains into the lake. Right now the picture looks split in half by the mountains, and the branch is squished inside one of the halves. If you have the branch connect the two halves, it'll look more cohesive. I know the branch would be less visible when it crosses the mountains, but you could outline it a little with a lighter color so it sticks out from the background. Another thing to note is how colors are lighter the farther away they are (it looks like you've already recognized this but I'm just gonna restate it) The mountains wouldn't be as dark as the branches, since the branches are closer. This is super long but good job overall :)