In your second art work there is a girl with braids in the upper right corner, next to it on the left is a square with a lime green and then a yummy rust on top of it. That rust is the color I would choose for the drapes, it's gorgeous on your wall color and would look so warm and inviting and original. I think you're on the right track.

Art is so personal and hard to suggest without knowing more. kat's questions are good. Depending on what you like, a simple dough bowl filled with fruit could be nice for the table. We have a lemon tree, so I like using lemons and their leaves. Any container you like is good, and it's kind of fun to keep it seasonal.

take down these small pics and then use painters tape to mark out the larger sizes I'd prob go w/more rectangle, and something in this size range. (i can't turn it like Celery does!) similar dining rooms to give you ideas of what sizes to hang if you want two, make them like this

@Patricia Colwell I have this piece but haven't brought it up yet as it is quite large and I wanted to try some other things instead. The artwork below is 51" x 41", so it would only possibly work on the left wall in the photos, which is 61" long. Its 2 1/8" deep and I worried with this one that it would stick out too much off the wall as it's a walk way there to the powder room! The rug is leather/cowhide with metallic paint on the spots where they drop acid, it's a common style of cowhide. It looks better in real life than the photos definitely, but I might skip a rug altogether in this room. I will probably try it and see how it looks, and I will post photos if I do. The art work is quite boring, haha. I was trying to keep it very neutral and light, but not boring!!