@pindiola hi... You can check E2 language’s youtube video on summarize written text. Their format is very helpful.
Also, pag multiple paragraphs ung ibgay sau, try to summarize every paragraph first. Then combine mo sila lahat in one sentence. If in case hnd maganda ang construction ng sentence after you combined the summaries, try to give more weight sa topic and s conclusion ng text.
35 to 40 word sentence will do, but make sure to construct a complex sentence.