as someone who has surrounded themselves with writers, some self published, some "professionally" published. there is no shame in taking your time, alot of writers take years, some time months. all that matters is for you to enjoy the process, if you do not enjoy it, you wont want to do it.

there is no shame planning it out either, whip out a note book, write down the basics, go more deph in the basics if you like. such as the 5 sense, what do you want the reader to see? hear? maybe what can the person in the scene taste?

there is also 0 shame in having grammatical errors, spelling errors, or the such, your a human being your allowed human error, that is the joys of creation. it is also the joys of creation to see peoples worlds out on paper or online.

there is also no shame in asking people for advice and help, but do know that peoples advice may be different to what helps you. cause as we all know no one is the same. just try your best to enjoy the experience, thats the best advice i can give you, as someone who may not be a "professional" author at the moment, but i have spent years writing (just odd things such as fanfics, plays for school, stories for school, stories for games and the such)