Christopher Falconer is appealing his conviction for the murder of Amber Kirwan. 

Falconer was found guilty of first-degree murder in January. Patrick Young, senior Crown attorney for the Nova Scotia Public Prosecution Service, said Falconer was filing a "prisoner notice of appeal."

That means Falconer is filing the appeal on his own and not through a lawyer. 

Young said it's common to see appeals of first-degree murder convictions because a prisoner facing a long sentence has nothing to lose by appealing the case. 

Crown attorney Kenneth Fiske told CBC News Falconer is appealing on the grounds that he should have had a change of venue. He's also challenging the reasonableness of the verdict. 

Nova Scotia Supreme Court Judge Nick Scaravelli sentenced Falconer, 31, to life in prison with no chance of parole for 25 years after the 12 members of the jury in Pictou delivered their verdict.

Kirwan, who was 19, was last seen alive by friends after leaving Dooly's pool hall in downtown New Glasgow in the early hours of Oct. 9, 2011.

Her remains were found about a month later in a shallow grave in Heathbell in Pictou County.

The Crown presented witness testimony and text messages that traced Falconer's movements from the time Kirwan was last seen.

Her body and clothes were found in a shallow grave close to the home of Falconer's stepsister and there was a bloody tank top found in his car, with both his and Kirwan's DNA on it.

Falconer also murdered Robert Leblanc

It was Falconer's second murder conviction. 

He pleaded guilty to second-degree murder in 1998 and was sentenced to life in prison. He and another teenager killed cab driver Robert Leblanc, then went joyriding in his taxi.

That killing happened on Heathbell Road, the same road where Kirwan's body was discovered.