3D visualization of a healthcare recliner.
Healthcare Recliner 3D Model
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Nice! Maybe you can add an occlusion node to some materials like the grey base of the seat. That would add a bit of shadows which make it appear less flat. Same with the wood of the cabinet. At default the occlusion node is really wide (250mm) so you can easily do just half. And you mix it with the diffuse by using a color composite node.
Basically it just makes parts darker where light has a hard time getting there anyway like right corners, places close to other geometry etc. I use it quite a lot because it adds realism in a lot of scenarios.
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Interesting, how exactly would you add Occlusion to an already existing material as the diffuse/source Color?
That’s actually why I put this screenshot in the reply 
I was thinking the same earlier but you just put the vertex node with that specific color as background.
Measured metal materials don’t have a specific color but on the other hand occlusion won’t be really visible on metals anyway due to reflection etc. so you could always pick a grey as vertex color if you want to use it.
I am doing this right now, using a texture map as a source.
That’s why I got confused over your previous screenshot
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I guess both works, but depends on which blend mode to use afterwards in the Color Composite Node.
Anyway, both works for me now, thanks 
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Ah, that works as well. I put in a feature request to make occlusion just a ‘on/off’ switch for a material with settings if you turn it on. That saves quite some work and I think it often make things look less ‘flat’ and more realistic.
It also depends a lot on the lighting of the scene. In games they always use occlusion since it’s real time rendered so it doesn’t calculate shadows that precise and if I create for example a livery for a racing game I really need to use a occlusion layer else the car would lack depth.
The other node I like is the curvature which is also handy to use as a mask to have some fine scratches on edges or just a bit of roughness changes on surfaces excluding the edges. Nice nodes to play around with.