RDR and GlasCider Fan Art

drawn based on:
https://twitter.com/GlasCider/status/1160154525623181313
(うすいこと)
character's origin:
람다람 (RDR) Twitter: https://twitter.com/rrr001222
Video of me drawing (not the whole process): https://www.youtube.com/watch?v=JmNfuzB3lEE
I'm totally new to drawing. I have problems drawing with pencils and pens because I have not practiced much drawing. I got inspired by RDR (squirrel <3)'s video:
Soda City Funk, Retro Speed Painting.
I made this in Paint Tool SAI (free-trial) because RDR mentioned in one of her video that she uses Paint Tool SAI and Photoshop to draw.
Photoshop is simply too expensive for me :<
I hope I can get some tips and tricks from you guys!
P/s: I love her retro stylist drawing~