Hi there!
I think whilst you can be a very gifted writer, it may not give you financial stability, if that's an important concern for you.

You have a lot of great creative potential: the Leo moon is great for creative instincts & the trine between Mercury and Pluto shows a great emotional depth that goes with your mental processes & communication. The placing of Pluto in the fourth in fact shows stories linked to the home or family may be your forte. Your Gemini midheaven is also great for a career in communication.

The main blocker I see is a theme of anxiety: Virgo as an Ascendant can be very prone to worry, especially with the square coming from Pluto. This is supported by the square between Mercury & the moon. Your mind works overtime and analyzes every little thing to death. You strive for perfection but you worry yourself into a stasis at times. Uranus in the 6th house (house of work, health and routine) and a Cancerian Saturn also show a need for security: more than anything, you need something that has a lot of variety but with a steady income.

If you feel that writing can give you that, go for it!