My working method for these new abstractions could be summed up in these two words, layers and lines. They were created digitally in Procreate app for ipad. The complexity of the designs is achieved with various shapes and overlapping colors that are built up in layers. Some of the shapes are transparent and some opaque. Line work was later added over this complex base. Two methods were used for creating the lines. A drawing tool, technical pen, was used for the thinner lines. Most of the wider lines were made by using a medium hard air brush tool. To make these slightly wider lines, the air brush tool was used in the eraser mode to cut the lines out of existing solid shapes. When the images were complete, I felt that they could be enhanced by digitally adding a slightly embossed or raised texture. This was done in another app, iColorama, which is normally used for digital photo enhancement.
You can see them at full size by clicking on each image below.