You are probably clever with things like that. I was ok after i had fathomed it out and did it my way not like they showed on You Tube Let me know what the ones you ordered are like as i read the post on the other side and was quite interested in the photo idea.
The little tool thing is worth buying, sorry Lissie bit late for you.
They do come in different sizes Rodo, I think mine at 18 links is the biggest. As Lissie says (I think it was Lissie) if you want to make it bigger then add the charms and don't take a link out.