Editing colours on an image

First Attempt on changing colour on an image:

on this image i changed the colour of the grass to a lighter brownish colour and the wooden shed to a grayish colour.

Original Image:  

Edited Image:

Second Attempt:

On this image i changed the colour of the hair to a yellow, the clothes to a red and the symbol to a gold colour.

Original Image:

 

Edited Image: