While use of language makes a whole lot of difference in GD, it alone does not qualify or disqualify you. One of the preoccupations of non-English speakers is that the use of flowery language determines the selection process.
Thanks for clarifying the point by saying %u2018use of simple and comprehensible language to communicate ideas in a logical and coherent manner is paramount%u2019.
You may be a non-English speaker, but what matter is logical thinking.