To add graphics as textures, we will need to open each image in Blender and create 3D objects that will receive those images as textures. Before you create an object to receive those images in Blender, we need a critical piece of information. You need the image dimensions.
Why? To avoid any potential distortions on images in Blender, we have to match the proportions for each graphic. For instance, we have a logo for the channel with 745 x 750 pixels. If you apply that logo to a square 3D plane, it will have a small distortion.
How do you find image's dimensions? Go to the file manager of your system and right-click on the image file and ask for Properties. There you will find properties such as dimensions. Here ...