Harbingers of Spring Joy. When the first bulb plants emerge from the still partially frozen ground in early spring, a smile escapes even the most winter-weary faces. Minna Niskakangas painted the Helmililja pattern using traditional tempera technique. This painting method is characterized by delicate translucence, which creates beautifully intricate details in the pattern. With the Helmililja collection's curtains, cushion covers, and table runners, you bring art into your home in the form of textiles.