Acrylic / Watercolor Practice

I always wanted to try out painting with acrylic so I borrowed the acrylic set from my sister for a try-out. I realise it is a lot easier to control the application of colours in acrylic than watercolour (since less water is mixed, the paint do not spread out as much). However, I find it difficult to achieve the wash effect in watercolour so you will see patches of yellow in the following painting.

The boy with a sticker on his forehead

is my brother.