If you're an original content creator you should not be using Patreon as your sole source of income. Patreon is a good way to get attention for your brand, but your primary goal as a creator of goods for sale should always be to funnel your fans to your own website where you control all sales and you don't have to give a portion of each sale to someone else.
all I'm saying is patreon is a waste of money, and should only be used to expand visibility and reach.
They charge 5% for processing payments which is 2% higher than paypal and stripe charge for processing payments, which they are certainly pocketing as hidden profit. Which is lying, another reason not to work with them.
It is _so easy_ to set up a wordpress site and start taking payments using something like wp-invoice or woocommerce. You don't need a fancy custom theme. The built in themes work great, nobody is going to care if a graphic artist uses a custom theme or not.