While detailed realism can be very impressive, as an artist I particularly enjoy work where I can see the artist's hand in the work - mark making, the 'thinking process' and looser, more emotional marks. To combine observation and accurate representation with emotion and interpretation is an art in itself. The artist needs to really internalize the subject - much as a musician, learning the music by heart and knowing precisely where every note is - can then freely interpret the music. In visual art, this means training the visual memory through lots of drawing from life. To look at a subject and hold it, in three dimensions, in the mind.
Gestural drawing is a useful way to both train the memory and encourage expressiveness. The point is to take in the whole form of the subject and express it in a brief explosion of mark-making. It should be approached with focus of mind and generosity of spirit: pay attention, then express the concept with broad strokes on a large scale.
Figure Drawing Short Poses
Blind Contour Drawing