first, get this song playing in the background: https://www.youtube.com/watch?v=_krVvglDO-8 . then look at the scene again.
watched tekkonkinkreet awhile back... the one thing that really moved me was this scene... obviously, made some changes.
some final tips:
be quiet when you whack someone.
don't leave prints when you ditch your piece.
burn your clothes afterwards.
most important, love your wife and child. because all you need is love.