Ohhh well I agree with most that has been said for example the dark lip liner & light lip color and freaky eyebrows, foundation overload or in a wrong color and white eye liner on the top lashes, cockroach legs lashes, and I'll add a new one that I absolutely hate Eyemakeup with no undereye concealer. I mean using for example, e/l or e/s with dark undereye circles is guaranteed to make you look worse.
On the other hand I use sparkly products on my face day and night and I also love blue mascara. They're fun to use.