N.B. The following are only my interpretations...so don't take it as the only way of seeing this cartoon...ive tried my best to use solid evidence to back it up.
technique: repetition/choice of words
evidence: "let it..."
how is it utilised: 'let' has a positive connotation, by repeating it it emphasises the positive perspective of 'journey' and the idea of following ones desire its trying to portray in this cartoon.
technique: imagery/symbolism
evidence: the long piece of string (whatever that is)
how is it utilised: symbolises the inner thoughts flowing freely out of that little man's head on which he follows. In other words he is journeying independently.
ALSO, the string/path appears to be very smooth, so it may symbolise how easy a journey can be when you follow your personal desire.
technique: choice of words
evidence: "go", "out", "unravel", "free"
how is it utilised: all these words have the connotations of 'freedom', 'breaking away' etc...by using these words it suggests that 'journey' is about freeing oneself from any sort of restraints/boundaries.
technique: contrast
evidence: dark background vs. bright foreground
how is it utilised: the bright foreground (little man with his path) suggests hope and positive-ness in the process of 'journey'.
The dark background (night sky) suggests the mysterious and unkown possiblities outside ones knowledge.
SO - although its all happy and ladeda following ones desire when journeying, there ARE many other paths one can take and its all vague to the traveller, so journey is both positive AND negative in a way.
right..thats all i could get out of this cartoon...there are some more but they were too far-fetched...better to stay on track than being TOO creative...goodluck with your analysis!