Arrived early. Very good quality.
Received the product as advertised (black option 2x3, good for a person). I will try some careful ironing first to make the folds vanish (it's synthetic so I will try low temperature). Not perfect as black background as it can reflect some light (some velvet kind of fabric would be ideal but expensive I guess) but hopefully under certain light conditions and the right angle of lighting will do the job.
Unfortunately, removing folds is not so easy as I thought. I tried ironing (low temperature for synthetics) and it couldn't help a lot. I have washed it 40 degrees Celsius wishing for some fabric straighten, but it didn't help either. My last stand is to try steam iron carefully. Folds can become a problem as they produce light reflections on the background, not ideal.