The easiest way to start sewing is to experiment with your old clothes, understand their construction and re-make them into new wardrobe favourites. This is why I have written this tutorial. Do not worry if you cannot sew a straight line, think of this as good practice exercise.
First, find an old shirt which you no longer wear. The boxier the better. Next, identify some old fabric offcuts to make into pockets and a neck-trim. Download this pattern and print! Follow the instructions below!
Now you are done! Enjoy your make!