How to make selection and change the color

I have choose picture from internet and I want do some edit from this picture :

Girl & boy

Step 1 : To create a new layer. Click at red circle

Step 2 : You want to open picture just click File > Open

Or create shortcut to open picture : Ctrl + O

After you open the picture, follow this step.
Step 3 : You click at magnetic lasso tool to choose selection 

Step 4 : You choose the selection with the magnetic lasso tool

Step 5 : Click at masks and the first red circle.
Number 1 that shows the picture becomes inverse and number 2 shows that picture has been selected

Step 6 : I have drag the picture in step 6 to step 7 in a new layer

Step 7 : Using the eraser tool to erase the non-selection

Before using the erase tool

After using the erase tool

Step 8 : Click lasso tool to select the baju kurung and baju melayu

Step 9 : Click the quick selection tool to add the selection or subtract the selection at that picture

Step 10 : Click : Adjustments > Hue/Saturation

Step 11 : You can change the color at above

Lastly, I change the color become more dark and brown

After that I still using the lasso tool to selected the ketupat :

Ketupat

Step 1 : Using the shortcut to open the picture Ctrl + O

Step 2 : I choose the lasso tool to select the ketupat

Step 4 : I have drag the selection picture on step 2 into the new layer

Step 5 : The selection ketupat was been selected into a new layer

Lastly, I have put the ketupat at the boy's hand