Arche in films is usually barebow, which makes it look easy. For beginners its popular for the first lesson because it uses simple bows, and is easy to learn when shooting at one short distance.
Unfortunately, it’s very difficult to progress, so beginners usually switch to aiming with a sight at the second lesson. This collection of notes and pictures has been gathered from many web sites and by looking at pictures. So some information may be wrong, and some may not work for you.
While there are no sights allowed, there are parts of the bow and tab that can be used to help with aiming. The arrow point, arrow shaft diameter, end of the arrow rest, the arrow shelf, stitching on the tab and the centre serving can all be used to aid aiming. The easiest aiming is probably a combination of face walking, string walking and a little bit of gap shooting.