The chin shouldn’t be sharp or V-shaped. Anime and manga guys have normal chins, just slightly elongated.
This is in contrast to the features of anime or manga girls, who tend to have their facial characteristics more centered on the face.
Bigger eyes tend to suggest youth and playfulness, while narrower eyes indicate an older look, like one of an authority figure. If you’re having trouble spacing out the eyes, remember that eyes are usually an eye’s length apart - meaning that you can just measure the length of one eye and then keep about that much of a distance between the two eyes.
The physique of the guy is up to the artist, but generally, wide shoulders and a narrow waist are two features that make up guys that are commonly seen as attractive.