Animation Tip - Depth in UI

Design by: @StefanTosic
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What are the ways you achieve depth in 2D work?
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While designing, always ask those questions:
1. What's missing? (I always ask that).
2. Why is it so static and boring?
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We needed to add dynamic and movement.
Flywheel avatars are meant to increase repetition and the fact that they float in the air, it also gives the movement. That makes the design very interesting.
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Do you encounter problems with reaching depth and in what ways do you manage them?