Looking for editing advice

Oly E-M1 @ 270mm, f/7.1, 1/400s, ISO-250.

Edited in darktable.

I'm new to photography and editing. I'm looking for advice on if this is a decent edit or should I have approached it differently? Most photos I see have more contrast, but if I push my blacks down anymore I'm afraid they'll get crushed too much. Some already are with the current exposure. I don't hate this edit personally, but I'd like it to look more "professional." Any editing advice would be greatly appreciated. Thanks!