how to create clean lines
A stylish beard can be accomplished in a variety of ways. Creating a shape or beardstyle using lines and edges does more than you think for the impression than just trim it evenly. It's also here you have the chance to create a beard shape that fits your face shape. Growing a beard does not exclude shaving, not if you want a well-groomed beard.

The main lines are those along the jaw line (a beard that runs freely down the throat as a wild weed is rarely handsome) and those on the cheeks. But some prefers more accurate details, like around the moustache, under the nose, between the lower lip and the chin depending on which style you are looking for. If you prefer a beard style consisting of smaller beard and leaving larger areas of the skin free, it is recommended that you shave as usual on those areas. Then use a safety razor or shavette (a knife with replaceable blade) with a creamy lather from shaving cream or shaving soap, as it provides a more efficient shaving.
Do not forget that there are actually practical tools, such as the shave shaper that you place where you want the line and just follow with the razor or shavette.
If you just want to even the edges and not shave any large surfaces you should use a pre-shave oil or pre-shave gel instead of lather as it also provides good protection and glide but is transparent and good if you want to see the edges. Then you go straight to where to shave, and here is often a shavette the most effective tool. Even though it has the same blade as a safety razor, the shaving are unbeatable when you want to flaunt the edges with finesse. It is also the tool used by professional barbers when they are styling a beard.
what you need
You could also combine both methodes - traditional shaving on the larger ares and create clean lines afterwards with shavette and oil or gel.
Gaining the same shape on both face halves or keeping the same lines every day can be a bit tricky and it can easily go wrong. Nor are our facial halves identical. Do not forget that there are actually practical tools, such as the shave shaper that you place where you want the line and just follow with the razor or shavette. You don't have to worry that the lather may cover the part of the beard you want to keep and that makes it difficult to see. Angle the shaper a bit according to the shape you want and shave! Press the shaper close to the skin, that makes it easier. A simple way to receive nice clean edges! And everyone will believe that you suddenly trained to be a professional barber.