Bad posture. Shoulder and neck uneven.

Hello everyone.
I have had a bad posture from 5-6 years but only noticed this couple years ago. I guess it is a result of bad lifestyle.
i have searched online about how to correct this but i feel my issue is a little different so I wanted to get help from experts.
Here i have attached my images.
Problems that I see:
1- uneven shoulders
2- asymmetrical neck (inclined to one side which makes my head tilted.
3- head leaned forward.

Can someone have a look and suggest exercises to correct this? I have searched youtube but I am confused.

thanks in advance.
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