I like the pelican, too. There are many ways to fill the space, but I would like to see him in the middle, one long piece on one side, and then two pieces (horizontal) that, together, would match the length and would be the same width of the pelican and other long piece. I would not use mirrors unless you have something great to reflect, but I would find similar frames, or something to connect the other art-- could be color, theme, matting, etc.

Exceedingly small update: I pulled a throw blanket with blue, turquoise, and yellow out of storage. And moved throw pillows around a bit. Does this seem like a good direction? I am leaning towards this rug atm. Haven’t shown any of them to Dh so he may have an opinion. But this one is fairly dark overall and has colors from the painting I am planning to move into the living room. Painting again: And maybe add these throw pillows form Etsy (and take away the solid pale blue ones)? https://www.etsy.com/shop/LiveLoveSmile/items?ref=pagination&page=3

https://www.rugsusa.com/rugsusa/rugs/rugs-usa-jungle-leopard-skin/Beige/200RZIN10A-5075.html?adpos=&creative=404301404572&matchtype=&network=u&device=m&mkwid=pcrid_404301404572_pkw__pmt__pdv_m_slid__product__pgrid_87583739978_ptaid_pla-895750430608&pgrid=87583739978&ptaid=pla-895750430608&intent=&cl_a=click&cl_aid=rugsusa&cl_asid=adwords&cl_ch=sem&cl_vend=adwords&cl_camp=8431888963&cl_adg=87583739978&cl_crtv=404301404572&cl_kw=&cl_pos=&cl_mt=&cl_gtid=pla-895750430608&cl_id=EAIaIQobChMIhLPV1PrP6QIVA4nICh1d3AOIEAQYAiABEgKtlfD_BwE&cl_cache=3338589554102704668&gclid=EAIaIQobChMIhLPV1PrP6QIVA4nICh1d3AOIEAQYAiABEgKtlfD_BwE

The small end table is forcing the corner of the sectional past the edge of corner wall. So, let that go. Rug is too big. Width is o k but the length should stop at the end of that wall. Art isn't working, especially if you want a sophisticated look. (Same goes for art over sideboard). Both are hung too high. So let them go. To make up for the fact you have lost an end table, you need a much larger coffee table. So let it go. Throw pillows: let them go. For rug...West Elm For throw pillows....sectionals are difficult. I like a lumbar on each cushion...a rougher fabric so it doesn't slide all over the place. Art is subjective....your call. Is he not cute?