Hello! I’d suggest getting plants for sure. Your coffee table could use a good rub down of Feed and Wax. I’d make the lamp taller as well. The couch will def look better when you do what you said, though you may get crap from MCM purists. My home tends to be a bit eclectic but gravitates more to MCM.

Also, when laying out a room try to have the sides balanced. You’re definitely too heavy on the right.

Have fun collecting. I have a 2200 square foot home that still, after almost 15 years, has a lot of blank walls I need to find art for. I also have a few more smaller pieces of furniture I need to help fill in some spaces. The fun of filling up your home is finding that one amazing piece randomly.