Hey hope you do not mind but if you still have writers block I have an idea for the dragon master. How about Hiccup and Astrid get married you do not have to write the wedding night, unless you want to. Lol. Anyway after that Astrid get captured by Burk. They find out who she is and Hiccup has to rescue her and Stormfly.
It is just a thought. Hope you do update soon. Love this story.