Good suggestions so far. I'll give it a day or two to get more responses and i'll sit and think out a plan of action.
I'm thinking of limiting entries to 8 in a group/category. Well firstly i dunno how popular this gets so i'll play it by ear. If more space is evidently needed here or there then i'll try and negotiate. I've also got to consider my dialup too! Yeah i'm a bit stoneage.
Anyhow, we have a few weeks to think about it. I want to wrap up PCI6 before i set this off. I can manged two competitions simultaneously but three's pushing it a tad!

I was thinking about dividing by design features. Pretty women could be one, as say politicians, or animals or whatever could be another.
That said by continent could work equally as well also. There's doesn't seem to be much to go on datewise.
I was thinking of having 8 categories, with 8 notes in every category. Allowing for 64 notes to be entered in total. Would this be sufficient?
Picturewise, i will request that they all be hosted on banknote bank;
http://www.banknotebank.com/Not only for standardisation of sizes etc. but also because the links are short (long links cause problems) and the pictures will stay there indefinately until they are deleted manually. Problems i've encountered with PCI is that when photos are hosted on sites that only hold them for say three weeks they can disappear mid way through.
Also i will have to emphatically request that photos are not uploaded onto Coinpeople as attachments in the entry thread, because i've had alot of trouble with that already in getting the pictures to show because i cannot link direct to them using [img] tags. Which means entrants that do upload them tend to get eliminated pretty quickly, because the only way to see the photos is by having to follow a link to the entry thread.
Where PCI has been concerned in the past, for users that didn't have Omnicoin, i used to allow them to submit images to me and i'd upload them on mine. However, in this instance i don't have a banknote bank account so i can't be of assistance this time round.
Any other questions, don't hesitate to ask.