The second design is with flowers.
First I polished the half nail with black polish. Then over the black, I applied a coat of Barielle`s Elle`s Spell scale effect. On the other half of the nails I painted One stroke flowers in red and black and some black elements around them. Finished with a thin silver line in the middle which separates the black half from the flowery half.
Covered all nails with Seche Vite top coat.