If you can't keep your webcomic running without making money from it, you're going to have a very hard time. It's not a bad thing to have as an eventual goal, but making a webcomic by nature involves putting in a lot of time and energy for no return, so unless you have a large fanbase already, it's going to take a long time to reach the point where people are willing to pay you for your work. Focus on promoting yourself on social media and getting to know other webcomic creators first, and gradually build up a reader base.
By the way, I took a look at your comic and while it looks great, I noticed a lot of compression artifacts in your images. You should export them at a higher quality - your file sizes are very small for the level of detail in the art, and you can easily get away with making them bigger (by comparison, mine probably average at 600kb per page).
