I see a post from 
The five ranks are "Plankton, Minnow, Dolphin, Orca, Whale". I start from the Whale badge.
First, I decided the shape of the badge is round. Then I draw the outline of the whale.
Fill in the color.
Delete the outline
Add details to the round badge to make it perspective.
Add shadow to make glass looking.
Make it more like a badge.
Add five stars on the bottom so people will know it's the fifth rank.
Let's see the process on GIF
The badge design is approved by 
Here is the link you can download for Steem-plus.
I will share other badge designs later.
Posted on Utopian.io - Rewarding Open Source Contributors