Hi stujphoto here , hosting Mono Mondays in March. Themes can be interpreted as narrowly or broadly as you wish and the geometric allusions could form a primary or almost incidental focus in your images. Also feel free to enter unrelated mono images as it is image quality and creativity which I will be looking for. 

March 4th #528 Sphere or Ovoid

March 11th #529 Cube

March 18th #530 Cone or Pyramid

March 25th #531 Cylinder

As this is my first time of hosting I  am very much looking forward to your entries.