Rate my deco

simple, but that is what I like about it. it is better to be simple and get the job done, than to be complex and have a poor job.

almost nonexistent

bland

Adding shadows to the spikes and adding a custom background probably will make it feature worthy

Not bad, pretty decent! I’m inexperienced in modern decorating but I think a darker background (or a moving one if you prefer) and a few more details in block design would improve it