Welcome RedVIking/BoB! May your time here be filled with many stringed things. Guitars too even.
The forum software doesn't do attachments > 1mb each. AFAIK there's no limit on resolution eg. Picture size - just file size needs to be < 1mb. Though it does do windows, 'droid and MacOS - so it's swings n roundabouts!
We do have a challenge running this month, check it out here if you feel the need to flex your creative muscles