Using healer and Queen to kick off other 3 star strategies is very effective against Dragon Flower bases as the Queen will simply travel along the walls with her new upgrade A.I. This allows you to make your way into the heart of the base and clear out a large percentage leading up to the engagement point.
Another benefit to this attack strategy is that it generally has a higher chance of scoring 2 stars versus most 3 star strategies. This can help mitigate the pain of the 0 or 1 star fail in Clan Wars.
This strategy if very effective when attempting 3 star strategies such as GoLaLoon, GoHoWi, and even GoWiPe or Mass Witch. It is mainly used against anti 3 star designs / Dragon Flower bases I as just mentioned above.
I illustrate a step by step guide for using the Queen Walk in the video supplementation provided below. Timing and funneling (like most attacks) are the two biggest factors in this raid. I cover some basic do's and don'ts as well as some more in depth advanced strategy tips for flawless execution (don't mind my 2 star at the end of video) :P
Best of luck. Hope you forum attackers find the guide helpful and useful in Clan wars and are able to score 3 (or 6) stars for the team!
Source: Guide by Ash