1) Rely heavily on concrete nouns and action verbs. Nothing conveys immediacy and excitement like the concrete noun and the action verb.
2) Rely heavily on short sentences and even fragments. Long complex sentences, especially when filled with abstract nouns slow the reader and even confuse him or her. Break up these sentences. Or balance them with short ones.
3) Don't hesitate to write one sentence paragraphs and short paragraphs in general. Never, never bury a key revelation or surprise or important physical gesture by a character at the end of an existing paragraph. Move this to a new paragraph.
4) Go easy on conjunctions such as "but," "and," "yet," and "however." The prose may feel fluid to you when you use these; but if you go back and simply remove them the prose may be even more fluid.
5) Repeat a character's name often in dialogue and in straight narrative. Don't slip into "he" or "she" for long stretches because if you do many fast readers will find themselves having to go back to determine who is speaking or feeling or viewing the action. Punch the proper names.
6)Be generous and loving with adjectives and adverbs. These words give specificity to the narrative; they make it vibrant.
7)When you repeat yourself in a novel, acknowledge it, as in "Again, he found himself thinking, as he had so often before..."
8) If the plot takes a highly improbable turn, acknowledge that through having the characters acknowledge it.
9) In writing intense action scenes, avoid slipping into "-ing" words. It may feel "immediate" to use these words, say in a sword fight, a physical brawl, or an intense confrontation, but if you stick with simple past tense, you will actually heighten the action.
10) Remember that in writing a novel, you are crafting something that must be fully understood and experienced in one reading, yet stand up to innumerable readings in the future.
If these "rules" or suggestions don't work for you, by all means disregard them completely! You're the boss when it comes to your writing.