Seeing more locations and lighting needs wouldbe helpful but maybe you can play off the square pyramid shape of the shade.
Another option, a simple shape.

Lots of adjustments should be make in this room. It's hard to make firm recommendations without seeing the whole room but........you don't satisfy lighting requirements by slapping a light fixture on the ceiling. That is general lighting. That doesn't provide task lighting or lighting to enhance the atmosphere of the room.

1. I am just guessing, but it might be better if your area was turned to run in a different direction. The floor in front of the window should be exposed to accommodate your plant collection.
2. Your wall décor is mounted too high on the walls. I have lowered it in this photo.
3. The sectional should NOT be jammed up against the wall. I'd move it away and allow for a floor arc lamp to be placed in the corner to illuminate the chaise area at night.

To go along with the BOHO chic style of the room, you might consider fixtures like these if you still require a ceiling light.

You didn't post a picture of the locations where you want ceiling fixtures to coordinate with your Tiffany style pendant so I'm showing only one.

I also made a few suggestions in a visual for the room you posted

- A long narrow bench for your plants would look nice under the window with all your plants in terracotta pots.

- A more substantial and wider looking coffee table (could be oval or round)

- A floor lamp in the corner near the window for better lighting in the room when needed

- You need to pull your area rug under the sofa, at least the front legs should sit on the rug

- the 2 frames I see are hung too high, you can lower them

One picture of one room, and one angle. One picture of ONE light and no pictures of where else you need light.?

Show the whole room and all the angles we can't see. Start there?

Eliminate the guessing game aspect just a little bit?

Adding ceiling lighting is not how you get good lighting in a space .Lighting all about different levels of good lighting that light the whole space when needed and a nice level when not needing all bright light . The fixture s okay not sure about vintage pizza but who cares. I see a lot of MCM vibe but really we need to see all the spaces you mention. BTW add those here in comments DO NOT start another post or we might lose you completely.

Firstly, I love the fact that you have color in your living room--the green rug, sofa and trim are really pretty. But I do agree with not relying on ceiling fixtures to illuminate a living room. You would be better off adding floor and table lamps. We do need more photos and a floor plan to advise you on where to place the lighting for best effect.