Is it standard practice to format a synopsis in the same manner as a manuscript (double line spacing, indented first line, 12 point, aligned left, times new roman size 12) when submitting to an agent/publisher? Or am I ok to switch back to single line spacing and no indentation?
Many thanks.
Unless you already have a completed manuscript, you are putting the cart before the horse.
If you intend to use an agent, you'll need to see what that agent requires, which is usually a query--outline, sample chapter, synopsis, and so on. Most agents (and publishers) no longer need or want the manuscript in paper format. Each has differing requirements (usually triple-spaced). But a query differs significantly from the completed manuscript.
There are a variety of books on manuscript preparation, and you should consult them; but you should first determine what the agent/publisher requires. The most important element is to finish your work. Leave everything else until your manuscript is complete.
