Drawing surfaces with BSurface, get many wrinkles and stripy texture I am creating a surface using BSurface plugin (great plugin!!), my surface is very large (10 km2) and the result is a very "stripy" looking surface.   I have applied auto smooth, smooth shading, subdivision surface modifier, decimate surface, laplacian smooth modifier, corrective smooth and smooth modifiers and still have a unnatural stripy surface.  

I suspect this stripy texture is because the surface is drawn between two curves and is interpolated along a straight line.  However, I still get a stripy look when i use many lines to interpolate my surface (see image of surface drawn with 10 lines) . Has anyone figured a way around this? For example, can you draw a surface, then changes its shape by drawing a 3rd grease pencil line? What is the best way to remove these wrinkles?
Yes there is an align verts with grease pencil tool. You should be able to use this to line your vertices up, and get rid of that weird affect. You may have to download an addon though...