Hi Alix,
Let me try to answer your question.
To be a successful Ps freelancer requires desire, patience, skill, and most of all determination. Don't defeat yourself by thinking you may need more experience, your work will reflect this and if you require more experience, then you will improve as you compete for more jobs. It's said, "you can never get anywhere if you don't try".
Don't be discouraged. Clients will always have different tastes and styles that they prefer. Remain true to your own style but take the opportunity to learn from each job you bid on and stay on top of all the current trends.
Build a strong portfolio! Always have examples of your work ready to be shown.
I don't suggest going "all in", start small and work your way up. Freelancing is a highly competitive and saturated market. Put your work in front of as many people as you can who could be potential customers.
You may have to do a fair amount of free work in the beginning but that's how you get your foot in the door. One free business card design can turn into many paying opportunities. Make a few free blog headers or logos and you may be surprised at how many requests you will receive. Also, (the time may come sooner than you think) don't take on more than you can handle. NEVER miss a deadline!
Do your own work. Use the internet to draw inspiration, but stay away from copyrighted materials. Don't, literally, take bits and pieces from anyone else's work. Use ideas and concepts, but make them your own. You may learn quickly that it is very frustrating when others copy your own original works.
A good starting point is the freelancing section of this forum. Give it a try to see where you might stand.
Hope this helps and good luck!