Headline tag for images in Photoshelter

[IoanSaid]

Hello!

I use Photoshelter for my commercial photography website:

http://www.ioansaidphotography.co.uk/

I'm trying to make it better re SEO and all that by filling as much information as I can. I'm using Picworkflow who give you a title, description and keywords for every picture..

But in Photoshelter's IPTC metadata editor, they put an SEO tag by Headline (essentially saying it's important) and not by title. Do you think it's good/useful/safe to use the info Picworkflow gave me for title and put it in Headline?

PS: This is for the pictures individually and not the pages.

Thanks!