Replying to Is anyone really good at english?

heres the problem. i can sit and write an essay for hours on some ramdom ass bullshit topic, but when it comes down to it, i cannot write when its actually something that will be graded.

i have to write a sonnet. you know, a poem.
14 lines
10 syllables per line.
and it has to follow a rhyme scheme, for example:

ABBA CDDC EFFE GG

or

ABAB BCBC CDCD EE

or

ABAB CDCD EFEF GG

i cannot for the life of me write this shit and im just drawing a blank.

can anyone at all be of assistance?