Will you give us one "do" and one "don't" for someone aspiring to be a writer?
First, do learn the craft. I can't say that strongly enough.
Second, don't try to be like other writers. Don't imitate them. I see so much fiction that reads as if they all had the same ghostwriter.
To combine those, learn the craft, don't imitate other writers, and strive to sound like yourself.
When people read me, they may not like my style or my topic, but I don't want them to think I write like someone else.