It's very difficult to photograph things that we see. Even more so if it's something we see every day. I feel that you did a decent job and you set up the composition really well. The detail in the riveted metal is nice to see. The rivets could be counted if somebody was willing to do that. The contrast is nice. My only concern would be that I feel this photograph is too dark. If I were to buy this as a print, I wouldn't be too happy with the outcome. The reason is that computer monitors illuminate whatever is on the screen. This would be a lot darker when it was printed.
Very nice photo. Do you watch the show called haven? If not it looks like something you would see in the show. I like how you can see every little detail in the lighthouse, It does look a bit dark; in a good way. Wonder, what it would look like if you left the light house that way and made the sky blue.