I agree with the other comments posted. Your English seems fine to me. I have a similar problem in that though I am in the US, I was raised speaking the Queen's

I agree with the other comments posted. Your English seems fine to me. I have a similar problem in that though I am in the US, I was raised speaking the Queen's English (for e.g. I refer to the boot of a car as the bonnet :D). I normally ask a friend to review an email/proposal that I have drafted and thats my way of ensuring that everything is kosher. I guess you could start by putting a disclaimer on your blog stating that English is not your first language, and probably asking a friend/colleague to review your post prior to posting it. But I do think that this should not stop you from sharing your ideas or thoughts. Someone's fluency with English would (IMO) not stop people from reading what you have to say. Good luck. Hope this helps.