As far as makeup application goes we'd rate swiping on lipgloss as an 'easy' and liquid liner as 'pretty damn hard.' Though nothing worth it comes easily and liquid liner visually elongates the eye, creating an almond shape, even if that's not what your mamma gave you.
As with all tricky beauty techniques (we're looking at you, GHD curls), practise makes perfect. You can't expect to give it a go and give up five minutes later if it didn't work out the first time. And, more confusingly, everyone has a slightly different technique when it comes to liquid liner.
The key to a killer kitty-flick (which matches on both sides -- the holy grail), is a good quality felt-pen or pot liner and angled brush, a spare hour to practise, and some micellar water to undo any slip-ups.
Check out the below ways the internet suggests you achieve angel-eye status. After all, beauty bloggers are the new makeup artists.