Explanations

I am preparing a machine learning report for an engineering class, and I find writing harder than the coding part. I can understand my results, but explaining them in simple words is difficult. I came across write my Machine learning assignments while searching for writing ideas, but I want to improve my own work. How do you explain technical results so that someone with less knowledge can understand them? Should I use examples, charts, or shorter sentences? Any simple writing tips would be very helpful.