shawnlim

Are you using vertical shift? If yes, u can select your camera and right click, Apply Camera Correction Modifier.

You can try create a multi/sub-object material and make it few different tone wood material. Choose your object and add MaterialByElement in modifier list. Under list frequency u can adjust percentage of multi/sub-object material.

Background problem... And I think you need to add more passes to the image, like AO passes , Reflection passes..

I mean when you bake file you need ti change LC mode single frame to Fly through.

Do you change your LC to Fly through?

Check your glass reflection setting ,you should create 1 Dome Light and add VRayHRDI below Texture and drag it to your material slot, mapping type change to spherical. And make sure your Dome Light option is full dome . You also can drag the material to your ENV map.

I think your gamma setting problem. Render output and should be 2.2. Or, when you save your image just override to gamma to 2.2.

Are you using Dome Light and forgot invisible it?

If you want a movement not in straight line u can adjust with Trajectories and Track View-Curve editor, here the sample ..