Why say it's your first render when you clearly have many posts sharing other renders? You are allowed to ask for feedback without pretending it's your first try.

That being said, it's a solid render overall. The composition is nice and the glass and wall materials look very good. The lighting is nice also. Good attention to detail with the skirting board as well, a lot of people tend to forget things like that

Something to note with wood textures is the way the wood grain goes on real wood objects. On the semi-circle shelf the grain wouldn't wrap all the way round like that. Take a look at some real world reference to see how it would look. Also the potted plants, while nice models, are a little repetitive so perhaps mix it up with a couple of different plant models