Quick Compatibility guide – Starting from Scratch.
This instruction guide assumes that you have some experience with Nifskope and can manipulate node names, location, and adjustments with it.

Use any of my main/optional files as reference. You can also refer to the (TYPE 1 Diagram) at the end as a guide.  Now, open the reference Skeleton.nif and look for the following Nodes:

·       LLeg_Thigh_OFFSET
·       RLeg_Thigh_OFFSET
·       LLeg_Knee_OFFSET
·       RLeg_Knee_OFFSET
·       LLeg_Calf_OFFSET
·       RLeg_Calf_OFFSET
·       LLeg_Calf_Lower_OFFSET
·       RLeg_Calf_Lower_OFFSET
·       LLeg_Foot_OFFSET
·       RLeg_Foot_OFFSET
·       LButt_OFFSET (Optional)
·       RButt_OFFSET (Optional)
 
All of my adjustments are contained within these (offset) nodes.

Now download your preferred skeleton mod, open its Skeleton.nif and create these nodes (Block->Insert->NiNode). Make sure to refer to the reference file and set up the nodes’ positions exactly. Once the nodes are in the correct order, you need to copy the Translation (X,Y,Z), Rotation (Y,P,R) and Scale adjustments one by one to your new skeleton file.
Once you are done with all the nodes, save, exit and test it in-game.

HINT: Compare the Nifskope previews to see if the new file looks similar to the reference ('Show Nodes' setting is quite helpful here). This is a useful, visual way to determine if a node is incorrectly placed.



Quick Compatibility guide – ‘Adjusted Neck and Head Proportions’.

Use the provided 'shorter neck with vanilla head size' version as a reference.

What you are looking for in the skeleton file are node names starting with 'CME '. These are from the mod ‘Adjusted Neck and Head Proportions’.
These nodes have all the custom adjustments from that mod and it will make things a lot easier for you.

Now you need to download your favorite variant of ‘Adjusted Neck and Head Proportions’ and check the ‘CME ’ nodes for its adjustments.
You can now decide whether you want to copy the adjustments from the new file to the reference file (remove 'shorter neck with vanilla head size’ tweaks, if
you don’t need them) or start from scratch and create ‘_OFFSET’ nodes in your new file (refer to the guide above).

Once you are done, save, exit Nifskope and test it in-game.
 
HINT: Compare the Nifskope previews to see if the new file looks similar to the reference ('Show Nodes' setting is quite helpful here). This is a useful, visual way to determine if a node is incorrectly placed.
NOTE: Ignore adjustments (except Scale) within the node ‘CME COM’ as they are most likely made in oversight/error.

 
You can use a combination of the above methods to merge adjustments from multiple skeletons (for example, a version with Knee Fix, Short Neck and No Collapsed Butt, etc...)

TYPE 1 Diagram