I think the background in #2 is OK. The lines on the wall are simple yet interesting. I like the composition of #2 generally.
One thing I'd suggest you can do is shoot in decent light. The EXIF data says:
#1 1/40th, f/5.6, ISO 800
#2 1/125th, f/5, ISO 1600
That means the Exposure value (EV) is around 7.5 for both shots. That's about 7 or 8 stops darker than I'd expect in normal daylight. If you had more light, you could lower your ISO (= less noise in image), increase the shutter speed (= no chance of hand-held blur) and decrease the aperture (= more depth of field), all at the same time.