You are looking for app for make a custom sticker right? I think Brush Your Ideas best option for you. Using their shopify product designer tool you can easily make a personalized sticker. The ability to help customers with the entire print production cycle is what makes Brush Your Ideas one of the best product customizer apps for Shopify.
Here is the shopify app link : https://apps.shopify.com/brush-your-ideas-designer
There are plenty of web-to-print solutions available for Shopify. So the choice depends solely on what kind of ordering workflow you are trying to implement.
Most of web-to-print plugins are pretty limited in terms of customization. They work well for standard use cases, but if your project requires something more tailored, then I suggest you to take a look at Customer's Canvas. They have a Shopify integration and recently launched a service that streamlines the creation of unique web-to-print storefronts for Shopify users. You may find more information on their website.