Expo visualization

Hi everyone,
I got my first paying 3D job and I would like your input please. Don’t worry about the objects. I made those the way I was told to (although the fern in the glass cube isn’t so hot!). It’s the lighting I’m not so pleased with. I would like it to be more realistic and inviting looking. I would appreciate any input on what i did wrong or failed to do.
Cheers!