What should I pay attention to when sketching with a pen?

Curved tip pen is a kind of artistic pen, which is a tool specially used for writing calligraphy and painting. I study architecture, and I need to sketch with a pen all day. As far as I know, experts use fine art pens to sketch, mainly because it can draw lines with different thicknesses. Sketch is a way to record life, a way to express feelings, a means to collect and sort out creative materials, and an independent artistic language like sketch. Learning to draw with sketch language is the most substantial link in landscape painting. Calligraphy is the expression of specific techniques, and different techniques can show different aesthetic effects. If it is the same line, some are relaxed, some are dignified, some are smooth, some are dull, some are slender, some are thick, some are soft, some are rigid, some are slow, some are urgent and so on. Therefore, different objects should be represented by different technologies. ⑴ Observe the opposites in the natural landscape: form and meaning, primary and secondary, virtual reality, movement, density, size, length, weight, straightness, front and back, height, etc. Depicting landscapes means using different technologies to unify these opposing relationships. ⑵ Spatial perspective: Parallel perspective and angle perspective. Scattered perspective in Chinese painting. ⑶ The relationship between density and physical reality uses the density arrangement of "points, lines and surfaces" to express different landscapes. If it is the same line, some are relaxed, some are dignified, some are smooth, some are dull, some are slender, some are thick, some are soft, some are rigid, some are slow, some are urgent and so on. Points: points, triangular points, irregular points and other lines: straight lines, broken lines, curves, dotted lines, etc. : blank space in the picture, etc. 4. Understanding the beauty of nature is not a purely objective description of the object in photography. While expressing the natural world, it is bound to penetrate one's own subjective feelings. In the actual sketch, the generalization and refinement of natural scenery, the selection and addition of materials and so on all come from this. Half of this feeling comes from the eyes and the other half comes from the heart. Although landscape sketch is the expression of natural landscape, it also emphasizes the expression of artistic conception and interest. This requires not only a keen observation of natural phenomena in life, but also a profound understanding, good at understanding and discovering its interesting life content and artistic conception and interest in natural landscape. . com/read.php？ tid-27843.html