Twist 12

Part of a series of about 25 op-art peices all using the same seed pattern to start with. i'm posting about 12 of them, three or four per month in a single bunch, so as to not spam those who don't dig op-art. Series is from about two years ago, done in PaintshopPro 7.

These have been posted so far:

Twist 1 :
[link]

Twist 4 :
[link]

Twist 6 :
[link]

Twist 14 colour 1 :
[link]