This answers a question that both Haylee and Siski asked a while ago, about what to send out or query with when you’ve got several projects kicking around your desk. Lots and lots of writers have multiple projects that they’ve completed. This is even more true for picture book writers, who may have 20 or more manuscripts.
The problem is, if they are beginning writers, those 20 manuscripts likely have some of the same issues. If I look at a manuscript that someone has queried me with and it lacks a strong character, for example, or a strong plot, or the voice is wrong, or there’s a lack of active language, or there’s no scene setting, seeing that the author has 19 more, hot off the press and ready to go, isn’t going to be a draw for me. If they were all written around the same time, or even before the one I’m looking at currently, they’re likely suffering from the same issues as the first manuscript.
Every time you sit down to write, you are getting better. You’re learning. Sometimes it takes writing an entire novel-length manuscript to teach you a valuable lesson about your own craft. And sometimes, that lesson won’t get published. Sometimes, in fact, it takes five manuscripts, ten manuscripts, twenty, for you to feel your way around the novel form. The same is true for picture books. In fact, it’s even more true. Picture books are deceptively simple and it is awfully hard to make a great one. Lots of people think otherwise, and happily churn out an entire slew of drafts. I think it’s more reasonable to see your early work and your early, prolific output as more of an exercise rather than a finished product. As such, I don’t want to see all of your exercises in my inbox. Some practice is better left for your eyes only.
If you get the itch to query and you’ve got multiple projects, query with your absolutely strongest one. I read thousands and thousands and thousands of queries and manuscripts. I can tell where an author is from looking at their work. Not every project — especially not the ones you wrote when you were still beginning and figuring things out — will sell. Show me only your strongest work. If I’m considering taking you on, I’ll be asking about your future projects and what else you have in mind, since those will more likely be even better. I will very rarely say, “Hey, do you have any problematic drawer novels I can sell?” unless you are a 12 out of 10 genius.
Agents really dislike it, actually, when people send a stable of their work on first contact. Pick the best one. If I want to see more, I’ll ask. This is especially pertinent to picture book authors. If I like the project they query with, I always want to make sure they have at least two more that I love before I take them on.
Bonus Tip: If you query an agent and get rejected, wait at least 6 months before querying them — of anyone — with a different project. Per my thinking above, the new thing you send me is most likely going to have the same issues that I noticed when I just rejected your first project. If you send out a project and it garners lots of rejections and little personalized or positive feedback, the cure isn’t jumping back into querying with a different project. The smarter thing to do would be to go back to the drawing board for a while and work on craft.