More play with patterns...

I posted last week that I had begun experimenting with drawing patterns. I did them on A4 paper using a black texta and a fine tip pen (and in one case a biro). I've continued playing with patterns this week and had fun experimenting, in part thanks to ideas on Pinterest. Part of the fun is in the evolving. I've made a few 'mistakes' and then in the changing of them been happy with the result. It's almost time to get some more black textas/ pens too I think. The two I'm using are getting rather tired. 

This morning I've had a few attempts at a weaving optical illusion and am thinking about how I can include it with other designs. Can you notice the small line I'm not happy with? Will I start again or somehow incorporate it into the design? I'm thinking of doing two different patterns, one for each direction of the ribbons. More experimenting to do!