What I would do is take that little chart Huineroson made for the new writing samples to be submitted with a permission request, and write a bunch of them. If you just keep writing your Agents, you'll get a plethora of ideas.

Here's the link to HS's chart:
https://docs.google.com/document/d/1IE81HONRJnp0IaK92GvzyL00CZYNZG_pvdo93gRMIhY/pub

Don't try to edit your work as you go along.

at least,That's what I've heard.

Also,do you have any books on writing? they could give you tips.

I find that what helps me write is doing something that gets me pumped. I don't know if it's just me, but I tend to get some sort of random inspiration when blood is flowing through my brain.

What do I mean? Well, what I do- I do many things. I listen to intense music, specifically, Slipknot. But it doesn't have to be heavy, intense music. Just listen to what music you love.

Also what you could do is watch Youtube, Netfilx, Hulu, or just DVD's. Watch a movie that you find inspirational. Or you can read a book that you love, or even talk to someone about ideas you have.

That is how I get ideas when I am having trouble. In your case, though, I expect that it will get you going, since you have your ideas already ready to go. But I get my advice from sources like Writer's Digest, so they may really work. It's not for everyone, but still...

Hope it helps.

Well, when Randa and I worked on our first mission, what we did was print off the badfic (obviously, you don't want to print all of it if it's really long- maybe just the first ten pages?) and we went through it together with pencils, circling stuff like spelling errors and unintentionally funny sentences, and we also wrote in little comments about what the agents might say to seeing it in person.

(We also kept tallies for the number of times out 'Sue said 'EK!', which made it a little more bearable.)

Once the initial sporking was done, I started the mission by plopping the agents directly into the fic and working from there. Any particularly atrocious lines, or funny lines, or relevant lines were included, along with the agents' reactions to them.

After the mission itself was finished, I went back and wrote the intro bit and then gave it to Randa to check over for SPaG and for Randa's (the agent) characterization.

Tl;dr I suggest MSTing the thing first. It doesn't require characterizing or plot and it can help you spot some particularly good gems of bad lines you might want to include.

I really, really hate writer's block. Some of my advice... Write the start of the mission on paper. Then, when you get to a point where your imagination is flowing, copy it onto the computer and go from there. If you come up with another case of writer's block, do the same thing. It may or may not help. :)