Understand the proper rhyme scheme of the English sonnet: a b a b / c d c d / e f e f / g g. This means that the first and third lines rhyme with one another, the second and fourth lines rhyme with one another, and so on.
Make sure your sonnet is the proper length. An English sonnet is composed of 14 lines, which are broken into 4 stanzas, as the slashes in Step 1 indicate.
Try to use the proper syllabic construction. Each line is composed of 9 to 11 syllables, with 10 syllables being the standard.
Format the stanzas properly. An English sonnet is comprised of three quatrains, or groups of four lines, followed by a couplet, which has two lines.
Use sound construction. Generally, the first two quatrains tell a kind of story or focus on an idea or feeling. The third quatrain then takes a turn, sometimes by introducing something new or unexpected. The couplet can then either summarize the poem or continue the turn introduced in the third quatrain.