HandMadeUK App for Shopify

I would like to hire someone who has experience with building and designing apps for shopify to sell. My idea is to make an app for handmade goods only, where people can find dropshipping handmade products to sell. I will tell you more once you have sent me a proposal and I choose your proposal. I will be putting this app up for sale and you will get credit if it sells per month. Also the chance to work together again if I like your work. I want the work completed ASAP please so time frame is important to me.