Replacing Windows in an Old House

Please note that this might not be the best way to install windows. I have installed windows in the past and this method has worked for me. Always follow window manufacturer instructions!
I am almost done with one of the small flats that will be rented out. Now I am at the furniture building stage which I like the most. Stay tuned for a cool bed furniture and fireplace corner videos. I am posting a video every week so be sure to subscribe!
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Songs used:
Goji Berry Beat - Nana Kwabena
Cage and Rand - The Whole Other