im making the planets and im trying to add a glossy marble material into blender, i found a tutorial but it doesent work when the object has a image texture
so, how do i add a glossy marble material into an object that has an image texture?
the glossy marble material should look something like this:
You could use a mix shader node with the image texture plugged into another shader in the first input and and a glossy shader with low roughness plugged into the second input.
Plug the facing output of a layer weight node into the factor, the blend value determines how much the glossy shader (second input of the mix shader) covers the object, it starts at the edge of the object and moves inward.
An example below, i don’t have blender at work so just using screenshots from another site. You would plug your texture into the color of the Diffuse BSDF and replace the black Diffuse BSDF in the screenshot with a white glossy shader that has low roughness.
I’m no expert but I always look for the simplest setup especially when using nodes.
For me as an amateur but experienced blender user, my process would be to plug your image texture into a principled BSDF initially adjust (in your case) the metallic to a high setting to see how it conforms to your goals.
I’ve attached a few images of a base flat texture, the same with 100% metallic and another with .700 metallic and .100 roughness. I would play around with a few of the BSDF settings first to get close and then maybe expand into additional earlier nodes if necessary.
Welcome 
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… a glossy sphere does reflect the envionment lights… maybe even using an HDRI…
What do you want the “planets” to reflect ?? Of course you can use an “studio HDRI”… like (i see now) @GrimZA seems to have used in the second post/ third image ??
