Why would you even want wood blinds? Show the INTERIOR...... and your decorating style. You

may need a custom privacy treatment, or it's a simple as curtains on a rod above, and you pull them closed.

Nobody can tell from one exterior picture.

I agree. Drapery panels would afford privacy when closed and would be unaffected by the arch. And when open, they would frame and show off the arches. 

Jan, or others, can top-down blinds be mounted below the arch? Or does that look stupid? I've never had them but wanted them a long time for my windows at the front of my house facing an ugly abandoned property.

But, Amanda, I suggest you Google "window treatments for arched windows." Because when I did, I found several ideas and entire articles. I also found wood blinds for arched windows.

You can mount standard, slatted blinds on the wall surface above the arches. It will look fine from the inside or outside and will project less from the wall than curtains.

Depends on the interior but simply go straight across and above the window with your blinds or drapery.

IMO wood blinds would be my last choice for those windows but we need to see the interior for window covering help.Please post the pics here in a comment do not start another post.

Hard to tell without seeing the inside style and whats around the windows but drapry and/or shutters, both custom could work.

Custom romans.