just did reline, need your professional advice

Just did the chimney reline for my pellet stove. There are two pipes, one for exhaust and one for fresh air. The one close to you with a separated cap is for fresh air, a 3" alimiumn pipe. The one for exhaust is 3" stainless steel pipe specially for pellet stove. I need your professional advice to see is there anything was done wrongly. http://www.flickr.com/photos/lmei007

thanks