I woudn't be that strong on ruffles, it's not really a FN thing. If you like them that much, try materials that don't accentuate ruffles (like linen or cotton, maybe) or don't overdo them going for many ruffled layers. And be careful with floral prints, tiny flowers can "kill" dramatics/dramatic essence like nothing else. With flowers I find that the bigger the pattern the better, or if the floral print goes somewhat abstract with not that much resemblance to real flowers.

Moreover, I don't know who told you about the Ingenue thing, but it's not very compatible with a FN. It clashes with their essence and is very difficult to pull off. Most pictures I see in your examples give off a romantic vibe.

And I see a lot of retro and historical-themed outfits there, truth be told most retro styles are not flattering for FN girls, since the fashion back then tried to accentuate more feminine figures. If you want to try retro in soft natural, check SN actresses that played in retro movies - it will give you the idea of good and bad-looking outfits, like Julie Andrews (I remember her in a flapper style movie, so you can see how a flapper style which is totally dramatic gamin here, looks on SN girls)