These are my large and detailed mandalas including these images:

Mandala Lines, Lines with Shading, Colorways 1, 2 and 3

Note: On Colorway 2 I have a black background so the shading does not show up on the outside. So, I added shading overlapping the edges with a black soft brush from Airbrushing. Then I added highlights to many parts. This rounded everything a bit making it more 3D appearing.