Just for clarity being a newbie to Flickr dos and donts.
This page says that they will delete pictures that otherwise do not qualify as ' shot on film'
How strict are they? thanks
You need to ask the moderators of that group if they will accept digital medium format images. Since it says 'shot on film', I suspect they wont. There are several groups now which cater for Fuji GFX images on Flickr. Just search Flickr using GFX and you'll see.
Most forums prefer images to be actually posted on the forum rather than links to external sites. Easy to do with Flickr, look to the bottom right across from the image where you'll see 5 icons. The 3rd one in line is 'share photo'. Click on it, copy the BB code for the large size ( usually 1024px longest side) and paste that into the reply to topic box on a thread where you want to post an image
Edit: I see from your Flickr site that you already know about the dedicated GFX groups. Lovely portrait work by the way, something I don't do too much of but may do with the GFX.
Edited by Mark C, 04 June 2017 - 11:35 AM.