Yeah well, there's a lot to nitpick here... "language skills [...] varies" - a skill varies, but skills vary. Obviously I'm making tons of mistakes too, especia

Yeah well, there's a lot to nitpick here... "language skills [...] varies" - a skill varies, but skills vary. Obviously I'm making tons of mistakes too, especially in a conversation (when there's no time to think and you can't go back to correct a phrase). Besides, being technically correct - in terms of grammar, vocabulary and so on - doesn't mean it sounds natural yet.