Second Piece of Primary Research

For a second piece of primary research i found a drugs advert on youtube.com and conducted a focus group of 5 people in which i asked them to watch this video and tell me what they think was good about it, what they think was bad about it, and how they think it could be improved?
http://www.youtube.com/watch?v=V75yvaYGyTA&feature=list_related&playnext=1&list=SPC09895C2453FEE35

The answers I received from my focus group were things such as:

• They picked up on a line used in the advert 'they told me i wouldn't get hooked on the first hit, they lied'. They thought this showed that people shouldn't just try drugs because they have been told they won't get addicted, as they do not know what affect it could have on them. 
• They picked up on a crime used such as thieving because they thought that a druggy would be so addicted to drugs that they would do anything to get money to pay for more drugs. 

One negative thing about only having a focus group of 5 people was that they did not really know what was bad about the advert or what could be improved. Therefore, if i conducted a focus group again in the future for a different task i would make sure that i used more than 5 people as i did not get very good feedback, so could not contrast my results.