I suggest that you try to find some plastic bins that are almost see-through and fit the space. That would be two for each of the lower shelves. You could pull out the bins to see what is inside and even label the outside. Or you could cut your plywood to fit the space and support it on the built-in shelves with bricks or purchased legs. The problem with this is that things in the back would be even more hidden than they are now. Then for the upper left you might be able to find a set of shelves that would fit. For the top right, I would put big soft things that you can grab and that won't hurt you when they hit you on the head! This might be extra bedding, towels, out-of-season clothes. For children's clothing I like to fold the whole outfit together, so that one doesn't have to hunt for the "matching" part. I think that your cosmetics could be in a small box that fits on top of other bins or clothing on shelves. Good luck. This will take some experimenting, but something will emerge.

OK... but the wire wont be lower as it is fixed now. The wire in the pics below is the wall facing each other. They were leveled on equal height but the beam on one wall makes it seem a little above. But i think you guys are absolutely right that up and down lights wont look good there. I think you are right about down lights lessismoore. Would it look good if i go with two different lights on opposite walls??? it would look odd right.

A rug with a horizontal pattern could help along with a false ceiling above in which you can install a line of recessed lights. The tiles and border on the walls suggest that this is a passage in a shared washroom space like a health club. It looks a bit cold for that reason. So hang a lot of warm framed prints to make this space more inviting.

You can also think on panel work with some openable shutters which can hide the boards as well give an access to use when needed . Bottom can be a sleek storage with louvers where inverter can get tucked in and also a seat or a ledge used for multipurpose. One thing to remember this set out would not be budgeted but, can allow you to explore option to make it look good or articulate well.