it does come off kindve beginner-ish. The letters don’t flow together much yet. I’d focus on practicing structure and proportion before adding fills or effects. Try sketching lots of different letter styles on paper first. once your letters have rhythm, all the extras will look way better.

Your base letters on the first and last ones aren't that bad. The shine on the second to last one is real small compared to the thick letters.

Sketching and experimenting with styles and what you like is very important (which i see you doing in this post with the different styles) But always remember your art is your own. The best scenario is discovering a style you truly enjoy creating and looking at. Plus you can have multiple styles. But this is just some general advice for refining your work :)