I have a corner of a bedroom which I'd like to improve. (Try to imagine the junk isn't in the way!)

The width of the area is around 95.3cm
I'd like to install something like this at the bottom, but want it to look 'built in'

This cupboard is 5.3cm short, so wondering how to hide the sides, and also the feet using some kind of kick board.
Next up is the shelves.
Ideally, we have floating shelves that don't sit on brackets for dowel.
Something like this

The wood I found at Bunnings looked a lot more narrow than the example above, so not sure how to make it float:

The timber above might work for the top of the cupboard though.
Any advice on how to finish the cupboards neatly, and do floating shelves of real timber would be greatly appreciate. Thanks!