How do I become a good blogger?

I mean, sometimes I sit in front of my blog trying to write an article about some certain topic, but somehow, words just won’t come out. I try my best to write something but I can’t find an appropriate way to express it!

Somehow it works with me, though, and I manage to craft an interesting article, but sometimes, if not most of the times I end up either writing a weak and boring article or giving up and not writing anything at all.

So how do I improve my writing skills?