So just to be clear we have to create our own panels with text over images via Snapchat or something right?
Images are not required, simple text is fine (use icons/symbols/emojis and bullet points to attract more attention) and in all honesty, as a user i think it's better not using images with text on.
The reason being, many images will resize to fit the panel and then your writing will become small and most times, unreadable, then we (users) constantly have to click images to make it larger so that we can read. We want to just scroll down your profile and read, not have to click everything otherwise it becomes too much having to do this with all profiles.
However if you do decide you want to add text to images or anything else, just look on google for free photo/image editor, there are lots of good free ones.
One thing I will also say regarding this is, try to make the writing visible to read if you do chose to do this, i mean, don't add bright coloured text to a bright photo/image wit fancy/decorative fonts. Again, it all leads back to what I said above, we want to read it not have to spend half hour TRYING to read what is being written - we will simply ignore it all or move on to elsewhere.
("stroke" or "dropshadow" can work wonders on text to help them be a lot more readable).
As for your original question, I think it all depends on what you are personally ok and fine with giving away for each fan tier.
Personally, I am always against a model adding "become my knight for the day/week/month/forever" on their tip menu or fan club rewards/benefits, this usually gets guys who are, in simple terms "jerks".. they are too annoying and rude to everyone else because they bought the right instead of earning it. But obviously this is up to you if it's something you really want, and if it is, then I would suggest only giving it as a PRINCE status, and as soon as they end their fan club membership as PRINCE, you remove the as Knight - unless they genuinely are good and helpful and not rude to your guests/users.
Rewards need to be at least a bit enticing, even if it's only a few videos and photos uploaded in your fans only club.
I see people offering discounts on WhatsApp, SnapChat, Private Shows (usually only private not exclusive private), a free photo sent to them in the PM upon signup (a good thing for this is to ask the new fan member what it is they like best: feet, boobs, ass, pussy, or whatever you want - then give them 1 photo based on their answer)..
Don't worry too much about what other models give, since some will give too much for free and some may (for you and for me) give too little. Look at ideas, improve/change them to your own desire and liking for what you are willing to accept/give.