On a bamboo sushi place, place 1 nori sheet shiny side down.
Dissolve the miso in the water and stir it through the quinoa.
Place half the quinoa evenly over the bottom half of the nori sheet, leaving about 1 inch from the bottom.
Slice the avocado and radishes, and place half on top of the rice.
Add half the herbs on top.
Roll the sushi and seal the edge with some water.
Slice with a sharp, wet knife into desired lengths.
Repeat with remaining ingredients.
Store in fridge until ready to eat!