John Leathem believes his sentence for stabbing the 15-year-old to death is too long.
Teenagers Guilty Of Killing Two Innocent Men
Two teenagers have been found guilty of killing two men in separate attacks within two days.
Andrew Moran, 19, was found guilty of murdering Steven Mitchell, 31, and Harry Reekie, 65, police said.
His accomplice Paul Erskine, 19, was also found guilty of murdering Mr Mitchell and of the culpable homicide of Mr Reekie.
The pair assaulted Mr Reekie after breaking into his home in Bathgate, West Lothian, on September 16 last year, police said.
The following day they murdered Mr Mitchell at another house in the town.
Following today's convictions at the High Court in Glasgow, Detective Superintendent Kenny Graham said: ``Paul Erskine and Andrew Moran are vicious killers whose callous actions have cost the lives of two innocent victims.
''My thoughts are today with the friends and relatives of Harry Reekie and Steven Mitchell who have had to endure the most tragic of circumstances.
''Although nothing can ever undo the wicked actions of Moran and Erskine, I hope this verdict brings them some sense of comfort.''
He said CCTV footage from Bathgate town centre showed the pair spending money stolen from Mr Reekie on new clothes and drinking in a pub the day after the attack, while their victim fought for his life in hospital.
The pair are expected to be sentenced next month.
The official statistics reveal a drop in the difference between men and women hourly earnings to 6.2% in 2016.
Judges will now look at whether legal action can be brought against Harry Clarke.
More than 19,000 people have signed a petition to get Abellio stripped of the Scotrail contract if it doesn't improve.
Most Viewed Pictures On Heart
Recently Played Tracks
To listen live, choose your preferred location:
Deposit £10 to get a £40 Welcome Bonus - That's £50 to play bingo, slots and more!*
Over 50 tracks to make you feel-good. New album out now...
Find your local four day weather report here.
Make Heart the soundtrack to your day and you could be a winner with great prizes up for grabs throughout the day.
Find out more about some of the companies advertising on Heart Scotland- East.