素描作品的优劣首先要从构图、造型、透视、质感五大方面研究。素描的观察与写生是初学者在训练中进一步提高绘画能力所采取的最基本、最有效的学习方法之一。静物写生训练过程是初学者对素描的学习由比较简单概括的几何转入对复杂的自然物体的研究与表现的过度。1构图是指对画面有机合理的组合,它遵循一定的形式法则,对画面进行整体位置的排列、调整,从而达到布局合理、层次分明有序、主题表现突出。构图的最佳要求是 The pros and cons of sketches first of all from the composition, modeling, perspective, texture research in five areas. Sketch observation and sketching is one of the most basic and effective learning methods for beginners to further improve their ability to draw during training. Still life training process is a beginner’s learning of sketching from the simplest outline of the geometry into the study of complex natural objects and the performance of the over. 1 composition refers to the organic and reasonable combination of the screen, it follows a certain form of rules, the overall position of the screen to arrange, adjust, so as to achieve a rational layout, structured and orderly, the theme of outstanding performance. The best picture composition is