Yeah, Doug's take on reflections just goes to show how what would seem logical may not work. Experimenting is the only way "on the cheap". I have friends that save the "egg carton" sculpted shipping foam and use spray adhesive to pop it onto very heavy cardboard & make sound sound absorbers & diffusers to, what you would strive for, "deaden" the recording zone. Once the recording is devoid of most natural reverb..."adding" the style of reverb & effects is more controllable via software/plugins to achieve the voicing you want. Some like a live floor (hardwood) for percussion recording. Depends on what you prefer & are producing.
Most of all, don't get discouraged & just have a bit of fun with it!
