I like the vignette you have created here, with the headboard, pillows and lamp - lots to look at, and it doesn't seem like a piece of art would be required.

You could, however, hang some stationary panels on the window - just to carry some of that pillow color around the room a bit.

These faux silk curtains from Wayfair are probably not quite right - I can't decide if I am seeing teal in those pillows or not. But, something along this line would look good.

Your headboard is a bit dark, so I could see karemore's teal a softer version in a square pillow...no buttery shams for that look...
Funny how ya see all sorts of things way above headboards sometimes... these two a bit spread apart?

Hey Lynn, did you consider an original piece of art? It could really make your space. Here are a few ideas. If there is something specific you are looking for, let me know and im happy to help.

again shams in another spot, and this pillow which echoes some shapes there? if you found a thin rectangular 'beach/ocean saying' in soft color, hang over bed.

I do plan to change shams and bed skirt. I should have stated that before. Love all the ideas! Here is another pic of room

Oh wow, it is really lovely, Lynn. Don't do curtains - sorry I suggested it! The blinds (plantation shutters?) look wonderful as is, and you have a nice, relaxed, beachy vibe going on.

Thank you! I am open to bedding ideas as well!

Lynn, you could probably cobble together a unique look of your own starting with your white duvet. Take a look at Nordstrum's Dena Home collections. There are so many pretty colors and patterns to choose from - almost all of which would suit your guest room so nicely.

You can mix and match euro shams, regular shams and bedskirts from different collections to get your own look.

Here are a few below:

Here are a few more shams from the collection:

Also, some embroidered sheets and some euro shams in the spring sparrow pattern from Pottery Barn:

If you like that sparrow pattern, you could use the euros, then mix with some of the solids from the Nordstrum collection.

And here are a couple of lumbar pillows - the Love one is from an etsy vendor, and the moss green one is Pier One.

A mention that if that detail on headboard weren't black your soft delicate things would be better [adding that to say I get it that you want to change buttery yellow]...

True that you will change just shams and bedskirt?
White cover with these? and any fun pillow.. and skirt you like.. soft black wicker chair or other accent color? I will wait for more info :)

The dark color in the headboard is a dark brown. I do plan to keep the white coverlet

I love the coral art pieces!

thought of your space...maybe pillow is brown?

Very cute pillow though!