I really don't think you have anything (much) to worry about. This article you wrote was pretty easily understood. English is my first language, and when I write, especially on the internet; I will use a lot of typing shorthand, so my writing on the internet is not always grammatically correct.
To answer your question, I feel that you have both been very blessed to understand the English language as well as you do, and it is also in part to readers who are understanding of when others make grammatical mistakes when writing. There are those who will bemoan even the slightest grammatical error, and then, again, there are those who are forgiving of such things. As I stated in the first paragraph, if this is any indication of your writing ability, then you really have nothing to worry about!