To start straightening the warped panels, lay them flat on a surface and use weights or clamps to keep them in place. Next, take a paintbrush and thoroughly wet the panels with water. Allow them to dry overnight while clamped. This process should help straighten them out, but keep in mind that wood can be stubborn, so it may not be completely effective. The final straightening will occur when both sides of the panels are finished.
I also primed the entire interior of the dollhouse using leftover paint. The color doesn’t matter as long as it is light enough not to show through the final finishes. I primed the floors as well since I plan to use carpet for the upper floors and tile for the lower one.