Heyo! I am actually a writer who was fortunate enough to find an artist and we currently are working on our story Cross. The thing I notice with new writers trying to get an artist on their team is that they don't know when to ask and how to ask.
Ask yourself these questions:
Do you have a clear and concise goal with your comic?
Have you done any prep work for your comic? Scripts, Treatments, Outlines, etc.
Are you open to criticism and willing to give up some power over your story?
If you are not paying them with money, what do you have to offer?
These questions are important when it comes to any group project. However, THE most important question is to ask
Are you dedicated and are you showing this dedication?
If you are truly passionate in your story, that passion will rub on others. You don't need to be the greatest writer to attract potential artists, you just need to show that you love what you are doing.
I wish you the best of luck, my friend! I hope this helped you a little!