So, a co-worker of a cousin of mine has asked me to make her wedding cake for her wedding in October. It's about 3 weeks away.
A couple of weeks ago I sent her some sketches with descriptions.. I didn't know how much I could do without any color concept whatsoever. She wants a WHITE cake. And she likes different details from 3 of her favorites that I had drawn out for her. From one cake she liked the fondant ruffle detail. Her second favorite was the sanding sugar effect (the cake is coated in sanding sugar, making the cake look like it's 'glistening) and her third was a simple fondant strip ruffle rose.

She wants ALL three of those for her cake. ALL three tiers to have a different detail.. but I'm not quite sure how to incorporate the three without the cake looking busy/scatterbrained/just plain weird.

Any ideas on how I incorporate the three ideas?

White on white alwasy looks pretty, even with different textures on each tier, I think.
Here's one of my favourites:
http://cakecentral.com/gallery/2138234/abstract-wedding-cake

I really like a different design on each tier with the color scheme bringing it together. Bottom tier white ruffles, middle tier white sanding sugar, top tier white ribbon rose and fanciful leaves on smooth fondant. Maybe add another ribbon rose at the base of the bottom tier. I don't think it's scattered at all!

Bottom and top tiers fondant ruffle, crystal sugar on the middle tier (maybe taller than the others) with a fondant rose here and there. Maybe you can do shimmer on the rose to make it stand out.

Or swap the ruffles and sugar placement.

I don't think she's a scatterbrained bride - most of my cakes are cobbled together from pieces of other cakes giving the bride something all her own.

I agree with Elcee. That would be absolutely gorgeous.