right!
Tallness will mean your shoulders don't look as large as you think they do, so don't worry madly, just make sure your top and bottom are balanced and you avoid high-necked and slashnecked things, ditto loose top/tight trouser combos (stay well clear of this season's smock-and-leggings look).
Wider-legged trousers - not neccesarily floaty, but made of something floppier than denim, maybe linen - could look fabulous, especially flared or bootcut ones, and with such a slim bottom wearing lighter/brighter coloured trousers with darker tops will draw the eye to your great height and legginess and away from the shoulders (and envy from the typical English pears like me).
Deep V or scoop necks (wear vest underneath if too revealing) break up your torso and avoid the monoboob look, and wrap tops that are snug round the waist are def worth a bash as they are often v flattering to your shape.
Empire things that gather under the bustline might work but will obscure your lovely waist so maybe try a couple and avoid if they make you look at all pregnant!
There's no need to wear frilly floaty things (I hate them too) but having such an imposing figure and wearing tailored stuff can mean you end up looking mannish - softer or textured fabrics like soft knits or ribs, interesting colours, and accessories like scarves, bold necklaces / earrings, bangles etc can help, also things like slightly frivolous bags or shoes.
Skirts are more difficult but long slim legs sound like they need showing off and a slightly full knee-length A-line skirt may help balance your top half, esp in an eyechatching colour or pattern. Long skirts are a minefield for the tall as they tend to hover unflatteringly at mid-calf, so unless you find some truly ankle-length floorskimming ones tread carefully.
phew!
Hope some, all or indeed any of this is some use...