Vehicle Livery

So I have been trying to make skins that look high-quality ingame I keep the size at 4096 x 4096 but when I export my skin form photoshop it looks like this


and the original that I got from LSPDFR look like this

Any suggestion on how to make it look like the bottom photo in photoshop?

export as .dds, dds have more quality, also try with less mipmaps (openIV)