1. Half Moon Mani with a French Tip Twist

Get the how-to at Cosmopolitan.
2. Textured Gilded Mani

quietlioncreations.blogspot.com

The gilded layer is stamped on with tin foil, and you can amp up the contrast by using gold and silver polishes. Directions here.
3. Gradient Dots

More info here.
4. Copper Leaf Starburst Mani

All hail gold leaf sheets. Tutorial here.
5. Autumn Leaves

mischsbeautyblog.blogspot.com

labellemel.com
Find the how-tos here and here.
6. Jewel Tones

A fall classic, and rightfully so. Directions here.
7. Layer-Loving Mani

Sweater-weather approved. More info here.
8. Super Simple Spooky Nails

Start with a coat of black, then use two different-sized dotting tools (like a Q-tip and a thin water-based Sharpie) for an easy accent nail. Directions here.
9. Nude + Neon French Tips

A minimalist look that works for all seasons - depending on the color combo you choose for the tips. Directions here.
10. Easy Seasonal Stripes
instagram.comThank you, Scotch tape, for all that you have given us.
11. Supernatural Nails

OoooOoo. Learn more here.
12. Fall Ombré Nails

No judgement if you stop at step #2. (Experts that can make it all the way to #7: Teach me your ways.) Directions here.
13. Gold Feathered Manicure

Directions here.
14. Minimalist Nude and Metallic Mani

An easy way to upgrade the standard nude nail. Directions here.
15. Elegant Halloween Nails

Tutorial here.
16. Two-Tone Taped Mani

ooohshinies.com

Fool-proof, and works every time. Find the how-to here.
17. Water-Based Metallic Sharpie Mani

Fine lines for days. Directions here.
18. Flat Matte Nails

You can make almost any polish matte by mixing in a bit of cornstarch before you apply it. Learn more here.
19. Harvest French Tips

Directions at Harper's Bazaar.
20. Pumpkin Nails

Because of course.
Source: buzzfeed.com