How to handle pricing as a freelance designer

Yo,

Thanks for the insight! After doing a few projects I feel like I have a good enough idea of how long it takes me to do things that I could give a go at quoting a flat fee. Originally that was definitely not the case, and I agree on tending to estimate under rather than over! (which is why I have shied away from it in the past)

I’m not sure what a reasonable number would be for an annual income doing something of this nature. Any thoughts on what that number might be?

Some details to go along with that question:
I have about 4-5 years working experience in related fields.
I am generally working with smaller private clients.
This is currently a part time gig for me but I would really love to transition to full time with this.

Anyone else doing anything different?