Photoshop Clipping To Remove Background And Colorize An Image

I recently removed the background of an image and colored it - I put the links of the images below, so you can check them out and get a feel for my work. 

A few key points to notice :

- The first image is the original photo 

- In the second image, I removed the background of the original photo 

- In the third image, I colored the photo 

- In the fourth image, I added a yellow background to the photo

Here are the links to the images :

Image 1 https://drive.google.com/file/d/1RZtPXVMm-VR7Gi-hR_nM0w4V0fuWk6zM/view?usp=sharing 

Image 2 https://drive.google.com/file/d/1RSkHEalEu4y0spKLRmRLLMacgi7oEpXe/view?usp=sharing 

Image 3 https://drive.google.com/file/d/1RW2JfRyoC8zFP8XhEUB29Tj6wqZbDgTR/view?usp=sharing 

Image 4 https://drive.google.com/file/d/1RX-54NZXv3GxnMiUibyVErOWwymZPOv7/view?usp=sharing