You model looks good, I like the form that it has but I will definitely work on the wood texturing and the position of the light.
If I was a woodworker I would think about the finishing of my material in this case, is it glossy, matte, or no finishing at all? The light in your model looks like its hitting just paper. You can’t really see the bumps or the texture of the wood. To fix this I would use the Principled BSDF shader in blender with the use of normal maps and reflections. This would help create that “realistic” wood texture. If you don’t know how to use nodes and the shader you can find a tutorial on youtube by Andrew Pierce. (Blender Guru)
I don’t know what kind of project this wooden chair is for but if I were going to show it to a client or to someone I would think about how I’m presenting this model. I would look online for references and at the same time look at the lighting of the scene. If you want a more realistic scene always consider that theres always different sources of light coming from two or several directions.
I would also use some other objects next to your chair so there is some kind of scale. Is this for a giant or a hobbit? Lol. You might not have the time to model each object but you can always use free models online to “fill” up the scene but don’t clutter it too much or it will take away the main focus which is your chair.
I hope this has helped you in anyway, Good luck.