nostr:npub1uu0efmt2nwwes79zfjsxx8dhwdzwkql0p8auf8lk0220yxclcxzqpfgh0g 
This is a great idea. There's no guarantee you'll get feedback, but it will stretch your mind to new dimensions.

/Shy/ is difficult for writers, and not uncommon. I am also horribly shy... in person. It prevented me from networking when I  got an agent, sold, and could get in to all those fabulous parties and meetups at Worldcon and other SF conventions. It's difficult, and crippling.  But now you are on the Internet. You can have blogs, you can have webpages, and you have a Mastodon account. You can write to prompts, practice, and get things out there.  Like I am.

I recommend following these hashtags and participating. Remember this about feedback you may get: It is the only opinion of the person providing the feedback (advice, etc.), and it is up to you to decide if it is relevant in anyway to accept or ignore at your whim.

#wordweavers 
#PennedPossibilites 
#writerscoffeeclub 
#writever
#writingwonders (defunct, but a very good read.)

These will give you a sense of community:

#writer #writers #author #writingCommunity #writersOfMastodon #sf #sff #fiction #scifi #ScienceFiction 

Good luck!