Design a Logo for an online shopping site.

Hello friends, I want someone to design a logo for my new online shopping website. I want freelancer to send me sketch a logo before I award the project. I will not pay in advanced. I will award the project if your sketch will be approved and I will award you the project and will create milestone. I will release payment after you deliver me original logo files. I want someone who can be helpful me for a long term as a partner not for just one time work. Requirement after completing this task > design website and app psd file > design social media content design on special days and weekends. Don't bid If you can't show me what you're going to give me. It will save my time. All are invited to bid. Thanks