I’ve been obsessed with Blender NPR lately, and testing out many ways to get this look. The philosophy behind getting the glass to look like that, I learned from Cody Gindy .
I almost gave up on this midway through because it looked so bad, but I finally managed to figure it out.
I used Blender for the modelling, shading, and rendering, and Rebelle 7 for some of the textures.
Also, the tulips are from Botaniq, I painted over their textures to fit in with the art style.