When it comes to sound, you can turn yourself into an outside, discriminating reader simply by switching the voice in your head with the one in your throat. Reading aloud, if done genuinely, will almost always bring out any awkward sentence fragments. Experiment with altering, moving or cutting them. Most sound problems, including repetition, echoes, alliteration, rhymes and poor sentence fragments, can be fixed by simple cutting. How to actually write harmonious prose is beyond the scope of this book, but at least the offensive passages will be removed.
Most writers equate complexity of thought with complexity of sentence structure.
A big mistake. On the contrary, it is much harder to present complex ideas in a straightforward manner. So aim for complexity of thought, not expression. Even if your sentence sounds great, always ask yourself if the meaning is clear for the reader. Be sure to mention the title.