Answer:
The writer Anna Hodges gives the poem a tonality of excitement at the idea of participating in the contest. She gives hints at this in lines 2, 3 and 5 as given below:
In line 2 we see a combination words such as "I've discovered America" ...
Line 3: "the wind at the shore"
in line 5 we have "a sweet throbbing in my chest"
Cheers!