Considering the wealth of poetic drama that has come down to us from the Elizabethan and Jacobean periods, it is surprising that so little of any value has been added since.
My feeling is that poetry will wither on the vine if you don't regularly come back to the simplest fundamentals of the poem: rhythm, rhyme, simple subjects - love, death, war.
At somewhere around 10 syllables, the English poetic line is at its most relaxed and manageable.
In my opinion, it is easier to avoid iambic rhythms, when writing in syllabics, if you create a line or pattern of lines using odd numbers of syllables.
The basic rhymes in English are masculine, which is to say that the last syllable of the line is stressed: 'lane' rhymes with 'pain,' but it also rhymes with 'urbane' since the last syllable of 'urbane' is stressed. 'Lane' does not rhyme with 'methane.'
There is no objection to the proposal: in order to learn to be a poet, I shall try to write a sonnet. But the thing you must try to write, when you do so, is a real sonnet, and not a practice sonnet.
