Domestika - Isometric Vector Illustrations from Scratch

Working realistically with perspectives on a flat illustration is a challenge that even the best illustrators face. To help with this, isometric illustration involves a grid in the design process that simulates depth on paper.
In this course, you will learn how to create isometric vector illustrations in a vector drawing software with the help of Jorsh Peña, a Mexican illustrator specialized in this discipline, who will teach you the basic processes to create such an illustration from scratch in Adobe Illustrator. You will use a grid on which you will create a detailed vector city, paying special attention to the use of proportions, lights and shadows, and of course, to the elements' perspective.
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https://www.domestika.org/en/courses/920-isometric-vector-illustrations-from-scratch