For me, I particularly love French manicure rather than the other nail art like flower... And I feel like beads and stones made me a totally handicapped....haha
All the tools you need are :
Nail polish( any color)
Start by applying a base-coat to protect the nail and provide a smooth surface to work on.
Then the apply the colour you like at the very top of the nail,
It might be a little bit messy, you can just cover the imperfect finishing edges with the glitter polish
At last, apply the clear top coat and voila, You have a home made French manicure.
There are variety choices of nail art sticker nowadays that are even much easier to use. Just base color+ sticker+ top coat will do a nice and flawless manicure for you.