Square, oval, rounded, squoval there are almost too many nail shapes to keep track of.

But who doesn’t love trying out different nail lengths and profiles?

That is unless you know tricks like the 90-10 rule.

French tip long squoval nails

The shaping of your nail helps everything to look more polished and pulled together.

Your nail is your canvas.

What is the 90-10-rule?

Woman clipping her fingernails

Professionals have long been familiar with the 90-10 rule.

But brands likeOlive & Junehave recently brought it to DIY manicurists' attention.

One of the most important elements in their five-step manicure guide concerns shaping.

Woman filing her nails

Or more specifically filing and trimming.

Doing so can actually lead to over-filling.

Not only does this sabotage your nail shape, it often leaves you with ragged edges and too-short tips.

Thankfully, the 90-10 rule is here to help yougive yourself the ideal at-home manicure.

The secret to filing success

Trimming should be done with flat-edge nail clippers.

If you want square or straight-edge profiles, it will deviate from your desired shape right from the get-go.

This means you’ll have to do more filing work, and we all know what happens after that.

Instead, choose straight-edge clippers that can achieve cleaner, sharper lines.

They’re especially helpful if you’re going for a squared-off nail.

It’s a win-win for your nails; they’ll look fantastic and stay healthy too.

Remember, 90% of your shaping work happens with the clippers.

Envision the shape you want your nails to be, then carefully and slowly trim them to match.

One chop straight across the tip isn’t advisable either.

once you nail the basic shape, pick up your file to smooth out any minor edges.