I am weak at forming good sentences in English, I have poor word-choice and I am unable to express myself in a fast and coherent way. I don't know what to do to solve this as I don't know where the problem lies.
In conversations, I sometimes pause to think of which word to use in order to form a fine sentence. This is very unpractical in real life (and the internet, too)
This is an example of a neat internet biography I found (on the internet):
"I'm SKa21, one of the few names I go by on the internet. I really enjoy video games and I am a fan of a few different things! Unfortunately, I don't tend to add anyone anymore unless I get to know you first!
This paragraph is neat and it conveys a lot about this person. It's summarized and the person who wrote this probably took 1 minute typing it. If I were to write this I would spend a long time writing it.
So how can I improve my fluency in expressing myself? How do I get efficient at expressing myself in a fast, neat and "poetic" way?