Hello! This video shows various tips and tricks for animating a little isometric scene in Spine and it is suitable for Spine ESS and PRO users of all levels.
VIDEO 
RESOURCES 
Assets and Spine file  and Original PSD file 
Photoshop script  and Other scripts 
CHAPTERS LIST  
Good for people that search on the forum for something specific:
CHAPTER 1: TREES AND BUSHES  
0:48  creating bones for trees and bushes 
1:32  renaming with find and replace 
1:53  changing the color of bones 
2:03  parenting the images to bones quickly 
2:24  animating the trees 
3:17  moving keyframes in an animation 
3:29  animating the bushes with the shear tool
CHAPTER 2: THE ROOSTER  
4:10  bone creation and image parenting 
4:38  animating the rooster
CHAPTER 3: THE WINDMILL BLADES  
5:14  creating a first bone and parenting the images 
6:09  making a frontal rotation (hint: 0°, 120°, 240°, 0) 
6:39  rotating in the opposite direction (hint: 0°, 240°, 120°, 0) 
6:52  making an object turn with isometric perspective 
(scale by 0.86 and shear by 30°, in this case it's 20° though) 
8:09  using the preview view 
8:45  offsetting one of the bones to achieve tridimensionality
CHAPTER 4: SMOKE VFX  
9:09  setup of the bone 
9:32  using compensate to fix the position of a bone with children 
9:52  animating the smoke (translate, scale, rotate, and fade) 
11:01  duplicating a bone with its animations 
11:08  offsetting an animation with the offset tool
CHAPTER 5: FLOWERS  
12:09  creating bones 
12:36  parenting the images by filtering the tree (hint: press P) 
12:49  animating the flower 
13:52  applying easing on everything 
14:31  cloning the flower and position the clones around 
15:11  differentiating the flowers by scaling parts of them 
15:46  changing the image shown in a slot with another one 
16:05  changing the color of many images at the same time 
17:06  tweaking the animation by offsetting some flowers