The way I did my personal statement was I made a list of all the things I've did that are relevant to computer science. I then made paragraphs in detail on each point. I then merged similar paragraphs together. I then took out unnecessary information. I then reformatted into an intro of what got me interested and some body paragraphs and a lovely conclusion as to why I would be a good fit for uni.
Ofc this resulted in a practical heavy personal statement but I ensured to keep it flowing and white how each thing ties into my love for CS and what skills I've gained. Remember you have to keep a quick pace and don't waffle at all. It should flow quickly into each point to ensure you don't bore the admissions staff. Made sure to make it unique and get them to read on and make it personal.
This was my personal approach but it's worked so far with 4/5 of my unis with 3 Russel group and Lboro giving offers