metal house trim decoration rusting

[David A.]

I have some of the metal house trim rusting out and am unsure on how to replace this. I've looked around at the big box stores for replacement sections of this trim but cant find anything like it. I'm looking for advice on whether to attempt replacement of this DIY or whether to price a contractor to replace. I plan on painting this property in the next month.

 trim pic

It looks like the trim is still firmly attached so I could possibly use ospho or a rust inhibitor to stop the rust and then caulk and paint any open areas.

trim pic 2