Have you tried Googling "topiary trimming guide" or another similar search phrase? You might run across what you are looking for that way.

Excuse my duh-ness but i'm having difficulty trying to follow whats going on here. Are these two photos an exact replica of your house and pool ? If not a hasty sketch with dimensions could help a lot. By kitchen wall do you mean the wall behind the bar ? And where is the pool wall ? Are you considering the covered area as being "inside" ? Sorry for all those questions lol Sometimes when you have a design problem you need to turn it inside out or on it's head. If you can't beat it maybe embrace it by making a feature of it : i.e. contrast by having the lightest colored pool surround and a great blue or tile inside and under the overhang, something that will echo the water color ? If you have a great covered area as in photo you'll most likely be spending a lot of time there and it could be soothing to be able to sometimes retire into a darker inside. In my book, 10M isn't small and also contrasting two floor colors doesn't necessarily make a space seem smaller and confined and may in fact even open it up. Could it be that you've thought yourself into a box here ? Sometimes one needs to give it all a good shake up and see how it resettles.

Temple and Webster have some great ones. So do eBay and Gumtree.

I didn't like any of the stock standard vanities I saw being sold. By chance I happened to see a second hand vanity being sold on FB so I brought it ( see photo). I liked its shape and solid profile but didn't like its colour. I took it to a auto car spray painter and had them spray paint it in Benjamin Moore Kendall Charcoal (a greige grey). They did an awesome paint job with a mirror like finish. I brought a piece of primestone (marble look) for the top, two small towel rails to be fixed in the underside of the vanity that is sticking out so I can hang hand towels on either side. I brought a new tap for it (but kept the vessel basin). I ordered in some new legs for it online because I didn't like the legs on it (see below). Its currently at a joiners getting put together. I've actually enjoyed the process of pulling it all together. Sure by the time it has been put together I probably would have spent the same amount that it would have cost me to do a custom vanity however I think there is something to be said for re-using something a second time round rather than buying into consumerism that abounds us. All up I've spent $1,074 NZD for the vanity, the spray paint job, new legs from www.prettypegs.com, the new towel rails from Reece Plumbing & buying a new Elementi tap. That doesn't include the joiners costs - yet. I needed storage in my vanity. This one fit the bill for me. Good luck with what you choose to do! I am doing a bathroom remodel as well and enjoying it.