Can someone teach me how to put textures/skins on vehicles for FiveM? Or make them for me?

FiveM Resource Development Discussion
,
1

I would like good looking SAHP, LSPD, and BCSO skins for cars for my server if you could teach me how to add skins that I found or if you can make and send me ones that look good that I could just put in my resource folder and add it to my server.cfg that would be much appreciated