Design exercise
Liujiang Jin
https://www.artstation.com/artwork/YKbEDd
Coloring exercises without original photos
https://www.artstation.com/artwork/Jeek8R
color practice
https://www.artstation.com/artwork/9N5EXa
Picture modification entertainment exercise
https://www.artstation.com/artwork/d8rXEK
Character setting exercises
https://www.artstation.com/artwork/ea39wY
Spider
https://www.artstation.com/artwork/DAKa6n
Illustration exercise
https://www.artstation.com/artwork/GXkkdW