How to get weapon and gear skin renders like the ones in the wiki

I'm just wondering whether the renders of weapon and gear skins are only able to be made by those who make the models or whether a simpleton like me is able to do such a thing as well. Like these for example:

 

You can view, screenshot, and even edit the models by opening their json files with the program Blockbench (the resource pack will need to be decompiled first), which is the program the modellers use to make them. (Also is just a very popular modelling tool in the minecraft community in general.)

 

Ah, that sounds about right. I have used blockbench before but just for skin customisation. Now I just need to know how to decompile the resource pack

 

I use jd-gui, however it doesn’t decompile the pngs properly enough for blockbench to be able to recognise them, meaning you’d have to open them with an image editing program, copy the image, and save it as a new png replacing the old one. If you google minecraft resource pack decompiler there will probably be some other options

 

I believe Zeer supplies the renders.

 

Ill have a look at some things then, thanks :)