Back in January 2014, Minecraft skins gained a hat layer. In June of that year, I used the in-game armor textures to make overlays for players to use on their Minecraft skins. My post had several issues:

• The uploaded skin file was corrupted, so the base layer was white, rather than transparent. This meant that the skin did not work as intended. Half a year later, I noticed and replied with a comment containing a functioning version.
• I only produced a diamond variation, so it was suggested a couple years later that I produce a version for each armor type. While I posted versions for gold, iron, and chainmail, I didn't feel comfortable trying leather, since the base texture for leather is white, and color (such as the default, brown color) is added in-game. On top of that, I wasn't sure how to approach the additional brown layer that's used on the cap, pants, and boots to distinguish its dyed variations from other types of armor.
• I didn't work to fix my post.

Now, I've decided to bring the newer armor textures to this skin overlay format, and I have a slightly better grasp on what I'm doing. In my description, I'm including skin overlays for the other types of armor, and I'm including leather, as well as a separate overlay for the "stripes", in case someone wants to change the color of the leather armor, then add the stripes on top of it. I'm also including a version of the leather armor without the stripes, in case anyone wants that for some reason.

I cannot recommend using these as your base skin. Please overlay them on top of another skin.

Leather	Leather "Stripes"	Chainmail	Gold
Iron	Diamond	Netherite	Leather Without Stripes

Please let me know if I've missed anything or if there is an issue.

All skins from this post were created using official textures.
I hold no ownership nor artistic credit over the textures used.

Edit: There is a known bug [MC-100929] that causes boots and chestplate shoulders to render with the pixels squished. This may affect how believable this skin overlay appears for others. Having a hat layer on your original skin may also make the armor less believable, as it will appear on the same level as the armor.