Spark's special lesson (Patreon)

Sorry for delay and delay! >_< I have tried my best, but these pictures really took more time than I expected. I don't want to give you guys some rough work which done in a hurry, so I really need some more time to finish the rest 2 pics. I will send 3 pics to you (and old works if you pledge $20) today, and the rest 2 pics will be send in a few days.

 Sorry again! And thank you for your understanding!