Ooh that's gonna leave a mark XD

You can post high res but unless someone develops an art front end for steem (which will probably just be a matter of time if there isn't one already that I don't know about) or some of the existing front ends develop light boxes for viewing full sized images in they still won't be seen :< so best bet would be to link to somewhere you're storing the high res version.

It's getting towards silly season so I think you'll be forgiven if you drop a few days.