In the IB, it is of paramount importance that one should strictly follow the subject guidelines. If you look at the marking rubric, it is important that you 1.) Effectively organise your arguments in order of importance; 2.) Correct reference quotations and its relevance within the paragraph; 3.) An argument must be provided in a literarily critical manner.
What I'd suggest is to state the argument in the first line of the paragraph. Then expand your claims with relevant quotations or refer to specific lines that you will be perfomring your close reading analysis upon. Note all literary devices and their significance in terms of its thematic significance, influence on reader's perception and interpretation etc. At the end of the paragraph, summarize the evidence and concede with your initial argument.
An example is provided below:
Shakespeare sheds light unto the concept of time as a mere artificial concept, as he cleverly manipulates his diction, to elaborate the creation of the sonnet as a plea and statement to time. As Time ‘carves’(9) and ‘draws’(10) metaphorical lines unto Shakespeare’s lover’s brows, it brings to question Time’s works of age as art. Both verbs are signature actions of an artist, and the idea of drawing lines with an ‘antique pen’(10) is one signifying maturity, a metaphorical illustration of one’s wrinkles being formed due to old age. Shakespeare outlines the physical attributes of an aging face, through clever personification to explicitly draw attention to age as artifice, and brings readers to wonder whether these artistic acts by Time can be undone. Shakespeare’s reasons that his beauty will serve as a model for beauty for men in the future, and insists that Time should leave his lover undefiled by the cruel nature of his works, and his lover’s beauty will be ‘untainted’(11) by age. His sudden affirmative tone carries through to the couplet, as Shakespeare’s pleading tone is replaced by the scorning, as he now decides instead of pleading Time to conserve his lover’s beauty, he instead decides to immortalize his lover through his verses, as the image of his lover will ‘ever live young’(14). This gives both Shakespeare and his readers a feeling of hope, and serves as a transition for his succeeding affirmative tone.