Let me have a crack at it...
Referring to this last one:
http://www.links-o-porn.com/fs/cathrina/004/
On your index you'll typically want 10-16 recips. Most link lists are happy with that number range. Place an advertising banner for you site somewhere on that page. It's a waste of prime space. The index will have a higher PR than the rest of the free site and will be indexed the highest. Advertise on it. Make your Enter link bigger so it can be easily found. Drop that link to D*sney before you get a cease and desist order. They don't appreciate you linking from an adult site. There isn't a good reason for an exit link anyway. Make them go back were they came from. Plus, all of that copyright jargon on the bottom of your page means nothing. The copyright is inherent. Warning thieves means nothing to them. They know better, but if they plan on nabbing your pics, they are going to.
On your main.htm...
You're asking too many questions. Avoid questions that can be answered with a 'no'. Don't ask them what they want. Tell them what the want. Tighten everything up a bit. It's all so spread apart. Bring that second link to your site up closer to the gallery links. No one is going to see it down there.
On your galleries...
The thumbs are a good size. You need to working on that text though. "Incase you want to see more of her..." Screw that! There is no 'in case'. Tell them why they NEED to see more. Tell them that these sample are lame compared to what this little hottie has on her site. Tell them that the movie of her stripping will have them drooling, they're gonna want to lick that tattoo off of her back... You have the same exact text on each gallery page. Don't do that. If it didn't make them click-thru on the first gallery, it's not going to do the trick the second time around. Also, it was already mentioned that your big pics are too big. Shrink them down to 600 on the long side, but keep them clear. Your pics are big, grainy, and dark. Keep them in order. They are completely out of order on the first gallery. Second gallery looks right though.
Keep at it and you'll be a master in no time.