So some people (Including me) don't know how to make a mob skin. I found an easy tutorial on how to make one!

Step1: Go to PMC Skin 3D and select advanced editor.

Step 2: If you have already started or made a skin, it might be there.

Step 3: On the top of bar where the tools are, there is a button that says file, edit, view, setttngs and help. (Or something like that.)

Step 4: Click on file. Press new skin/new skin file (Whatever it says, it is the top one on the dropdown menu.)

Step 5: You might get a warning, if you do, press download skin if you don't want to lose it then you can work on it later.

Step 6: Press yes.

Step 7: Click on model, then select the mob you want. If you want it have the default texture too, click base color.

Step 8: How to use PMC Skin 3D

Step 9:If you want to, click publish when you are done so other people can download it. Add tags, a title, a description and give additional credit if you want.

All done! I hope this helps!