Hi Stefs
I agree with IamSam that providing a lot more details would help forum members provide better targeted recommendations.
I also agree with IamSam's sentiment that there might be a better way to organize your Layers to achieve adjustments to your digital paintings (that might be a better discussion)
That said I wanted to pass on a couple ways to adjust a specific set of adjacent Layers similar to how a clipping mask limits adjustments to the Layer below
First way
---------
Select all the adjacent Layers that you want to adjust together. Put them in a group:
Layers > Group Layers | or Cmd + G (Ctrl + G on PCs) | or right click on grouped Layers n Layer panel and choose "Group from Layers..." (Blend should default to Pass Through)
Then above that Group, create an Hue/Sat Adjustment Layer and clip that to the group
Second Way
------------
Putting clipped Layers above a group may not suit how you want to organize your Layer Stack so this second approach is another option that does the same yet may feel a bit cleaner
Select all the adjacent Layers that you want to adjust together. Put them in a group:
Layers > Group Layers | or Cmd + G (Ctrl + G on PCs) | or right click on grouped Layers n Layer panel and choose "Group from Layers..." and make sure the option is selected to the Group to have a blend mode of Normal instead of Pass Through
Now expand the group by clicking the down arrow of the Group Layer the the Layer Stack (it shows all Layers in the Group now expanded and indented.
At the very top of these Grouped Layers, add a Hue/Sat Layer (still within the group). Since the Blend mode of the group is normal, the adjustments of the Hue/Sat Adjustment Layer will be limited to the Layers within the Group.
Since the Hue/Sat Layer is inside the Group, when you collapse the Group to make the Layer Group look cleaner, the Hue/Sat Layer will be also hidden within that group for a sightly cleaner look for you Layer Stack
-----------------
I am doing this from memory yet believe this is correct (if wrong I am sure forum members will chime in
)
Again this only works for adjacent Layers and not arbitrarily selected Layers
Hope this is helpful
John Wheeler