Whatever you do, don't use websites to create it
I made a mistake of making a vanity address using BitcoinVanityGen (The site even has HTTPS lol)
It was all fine for like a month then i deposited 6 bitcoin and within hours they accessed my wallet and stole all the bitcoins
That's really worse. What's the need of having fancy address. It always gain attention from users all around and this itself had serves as an reason for the loss of such a big amount. When we make changes its gets added somewhere else out of the origin. So it always has risk in it.