As a writer, detail is definitely not my major issue to address. That goes to revision or dialogue. However, I am always looking for ways to refine my technique and improve my wordcraft.
I picked up this book for free, and clocking in around 7,500 words, "Telling Detail" is a quick, informative read that offers good, solid advice to writers at all skill levels and genres. The touchstone of how to describe is illustrated through neat, direct examples that embrace other important elements of when, where, and what. The examples lay out ways to avoid problems and how to tackle the sticky matter of writing a description well. I found most of the information familiar but important to reiterate. This is a good introduction to balancing detail and where to inject life into your novel.
The author does a fine job of raising yellow flags that specific genres ought to be aware of, because nothing makes readers happier than seeing the Xiracai clutching his qi'velt as he faced a black shirrel, and hearing him snap, "Vrect! Did the Melporsin send you by cmin?"
I feel some of the premises could use expansion, and the addition of a few exercises wouldn't go astray. As another reviewer noted, examples taken from popular novels and deconstructed would be very helpful.