When doing a bold lip, make sure you have well conditioned lips. You wouldn't put paint on a cracked wall. No lipstick, whether it's Chanel or Barry M, will look good if your lips look like the Sahara Desert. I have a good scrub with Lush Cosmetics' Popcorn Lip Scrub and then moisturise with Nuxe Reve de Miel Lip Balm.
Once you're prepped, cover your lips and the surrounding area in a light reflecting concealer to give yourself a clean base to work on. I've used my favourite, Nars Radiant Creamy Concealer in Vanilla. This will also help your bright lip look crisp and perfect in photos, because of the contrast between the colour and the bright clean skin around.
Next, I find it's easiest to line the middle of your bottom lip directly under your cupid's bow as this helps the overall shape become more even. Join up the middle sections with the corners of your mouth.
If you don't have a steady hand, make your other hand grab your wrist while you apply the lipliner. Don't worry if you mess up, just get a cotton bud soaked in makeup remover (Bioderma is best) and use it as an eraser on the wonky lipline.
Colour your lips in with the liner. This is great for longevity as it gives the lipstick a base to cling to.
Apply your chosen shade. Some people use a lip brush - I do when I'm working, but on myself I just whack it on straight from the tube. Blot on a tissue to press the colour into your lips, again this is good for longevity.
Apply another layer of lipstick.
You're done! Perfect bold lips that should for last hours.