First I just tried different battles and equipment to see which one gave me the closest damage to 5000 on Withdrawal. As you can see I played Captain Hunt. After I got mildly close, I just changed my equipment a lot and just kept testing my damage. I had a lot of different speed variations and withdrawal let me differentiate strength and instinct as well for a closer margin. Eventually I got to 5008, so I decided I would take a screenshot then. the problem was that I went first and withdrawal has no time before the damage comes, it's just a WHAM move, and I always attacked first. I had no time to actually get the screenshot off while still clicking withdrawal as my move. So then I had to increase Felicity's speed until hers was higher than Sonny's so that she went first. After that I finally took a screenshot of it.
After I took the shot and some other just in case I went to pages and put the image there. Then I masked out one of the 0's and put another copy of the shot on there with the masked 0 over the 8 that was there. I also had to change the background inside it to match the hills around it. Then I took another screenshot of the whole thing and uploaded it to photobucket. So I basically Photoshopped it without Photoshop.