>>3377807>>3373977It's a tangent. The edge of one object's silhouette shouldn't touch the edge of another object's silhouette. It makes the composition feel unnatural and claustrophobic, as well as making it generally harder to read.
>>3373865Most pro artists don't excel in every single artistic principal. Eiichiro Oda, my favorite manga artist, is incredible at character design, perspective, and shading, but he's awful at composition, with most of his panels being overly cluttered unfocused messes
It's important to break apart and analyze your favorite artists, because if just blindly absorb their style and practices you'll end up picking up a lot of their flaws and bad habits