How to take inspiration, and use it in a new, original way?

Hi,
This feels like a very vague question and it's probably the basics of designing in general, but I still want some input.

I love design, but I have no formal training and I don't even do it often. When I was a kid, I always designed things, mainly by drawing imaginary cars, or building them in Lego.

With age, my interest in design went from cars towards graphic design, but it feels like all my sporadic work becomes more and more derivative of other work I see. I can find someones design or style, and absolutely love it, but I struggle at taking the parts that I like, and combining them with other things.

Right now, I'm in the process of designing the front panels for a couple of synthesizer modules I'm working on, and I have about 4 to 5 main inspirations, but I don't really know how to combine them or do something original? Would love any insights, tips or other ideas connected to this.