I have two narrow areas on the livingroom walls that many wires show. How can I make beautiful, tall floral arrangements that cover them up but look nice and like they belong.

Are these electrical wires ? If so, are they shut off ? You can arrange the flowers with pipe cleaners. I'd pick a dark green to hide the wires. Make them the same way the wires are going to cover them up. I hope this is what you mean. Good Luck!

Have you looked into paintable cord covers?

There are several ways to hide or disguise wires: https://www.huffingtonpost.com/entry/pinterest-hacks-for-hiding-unsightly-wires_us_56719d79e4b0648fe301ca2e