Steam Game Covers

tengo mas de 300 juegos de steam y me surge la necesidad de cambiar la imagen de algunos juegos de mi biblioteca
pero en Internet no hay formato y tampoco una base de datos para escoger por eso propongo tener una sección de caratulas(imágenes) para la biblioteca de steam

he aquí una caratulas que quisiera cambiar

Hello, my Spanish isn't very good but I was able to deduce that you want us to make artwork to replace the images in the Steam client. We just focus on printable disc and case art here. If you want to create your own images you can easily make them in a few minutes - just find a background image that you like and the game's logo in transparent "png" format. slap the two together in any image editing software. The dimensions for these image are listed below. I believe they are called "Header Capsule":

https://partner.steamgames.com/doc/store/assets

Hope this helps you out. BTW - there's no need to double post this. I deleted your other post.