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The good thing about DIY renovations is that lessons will be learned when anything goes wrong.

Alternatively, in my experience, you could hire a tradesman - 95% of them will charge you a premium and then cut every corner to maximize their profit while minimizing their time and effort, leading to the job needing to be redone within a few years. That tradesman knows it's not worth your time or money to risk taking them to court or they will have bankrupted their business to flee all responsibility.

TL;DR: Providing you allow time to research a first-time project properly (and providing it doesn't involve electricity), you're almost always far better off in every way to DIY.