Question: If I were to make a trade thread, should I have it ready all at once, or work on it as I go?
You can create a trade thread right away and then edit it whenever you have the time.
You could for example add something like: "Please do not post yet!", "Currently under construction!" and/or "Work in progress!" to the title until you're satisfied and ready to go.
Also make sure to reserve as many posts as you need for the different sections of your trade thread. You could for example take a look at the threads of some of your fellow users here and get some inspiration.
Once you feel you're ready you can make a post including a message like: "Alright, this thread is now officially open. Feel free to send me offers!"
However, before you post your thread I highly recommend that you carefully read the rules once again (just to make sure).
I provided a link to the thread here for your convenience, you can access it by clicking
here.
If you have any other questions or concerns, feel free to ask me for advice via private message and I'll gladly get back to you as soon as I can.
I opened my very own trade thread here on Smogon a bit over a year ago and I'll gladly share my experience with you if need be.
I hope that you found this helpful and I wish you good luck with your thread!