Your going to have to sew a piece of fabric to the tier above, so that you get the drop down you need, then sew your ruffle to that dropped down piece of fabric, rinse and repeat. Doing it that way will keep the poofyness down, if you were to just make the second ruffle 2 or 3 times longer than the first and then ruffle together, your gonna get POOFY. You may have to work from the lower ruffle to the higher ruffle and then sew it to the waist band of the skirt.
I'm sorry, I am not being able to comprehend what you're saying.
Do you mean making a tiered skirt then adding ruffles on top?
Or are you meaning a three layer skirt w/ each layer being a different length all with ruffles on their bottoms sewn into one waistband?
Both of those seem like they'd be pretty poofy to me. Or do you mean something else all together?
The way I was kinda picturing it in my head, I'd make a base skirt. Maybe like a pencil skirt or an a-line, then sew three wide ruffles to that skirt, or maybe just 2 ruffles and the third would be the hem of the base skirt. But I'd need some guidance on how to make the base skirt and how long the ruffles needed to be before gathering.
I wish I could look at how the example I linked to was put together.