Start with the first paragraph talking about the product. Introduce the product and talk about it in general. Then continue with next paragraphs talking about why it's good, useful, bad, you like, don't like etc. Keep each topic in it's own paragraph. Then write a paragraph as a conclusion which sums up the whole topic. so, the whole essay should be at least 5 to 7 paragraphs. Also, vary your wording. For example start some Sentences with "When I use the...." "However, it could be better if..." etc.(connecting words) Also for example "The product is good, sturdy and useful..."(words in a series) and other tricks to keep it interesting. Also, try writing the essay without using the word "that" in it. Basically keep it simple and clear. It is an essay ...not a literary work. Good Luck!