You can use Photoshop to process it. The size of the picture or photo shall not be less than 3 cm × 8 cm and shall not be larger than 15 cm × 22 cm; the proportions of each view must be consistent with the actual object; the size of the picture or photo must not be Contain graphics and text that cannot be used as the specific content of the protected design, such as portraits, trademarks, logos, classics, famous buildings, etc., or lines that should be deleted, such as hatching lines, indicator lines, Dashed lines, center lines, dimension lines, etc. You can also use CAD and other drawing software to draw views