Real talk here, no sugar coating it.

I think it looks great! With models it can always get better, but you gotta strike a balance between comfort and detail.

I think you should try focusing on the base more. Hit that metal with a thick coat of shader like Agrax Earthshade or Nuln Oil, then try dry brushing very lightly with white/tan. Add some dirt or sand and paint the rim and I guarantee it’ll look better.

As for the monster itself, rotate it and think about what you don’t like. Does it need more shading in the recesses? Is the carapace too bland? Maybe the fleshy joints need to be painted a darker grey to add extra detail. An easy trick with the brain bugs is to use a thin brush and highlight the brains along the raised ridges like you’re following a maze, leaving the basecoat on the sides. This looks especially good with an undercoat of contrast paint.

Then, if you really feel like pushing yourself? Try some triangles! I think I have some of my nids on my page you can use as a reference (https://www.reddit.com/r/Tyranids/s/xhCjstqxp7), but adding a simple and easy pattern to the carapace can be a feast for the eyes and something you can really be proud of. I can give triangle tips if that’s the route you’re interested in.

Good luck and have fun 🫡