I learnt the technique on Youtube. Mix black and a dark shade of blue to form an acrylic solution. Using a thick brush, drop a blob on one corner of the page, then use a straw to blow out branches. The leaves are just dabs of pink, white and scarlet! Here is the link.
Medium : Acrylic on paper
Time taken : 15 - 20 minutes
Time taken : 15 - 20 minutes