Social Media Marketing for UK Competition Site

We need someone to completely manage our social media marketing! We are currently set up on Facebook and Instagram, and run Facebook ads. We are a UK competition site, with draws every Wednesday evening. We want to build our community and reach more customers. We will need you to create images/videos and social media posts.

Please send a detailed proposal - we want to know how you would approach this and grow our business! Please also include your relevant experience with examples and success rates, plus your monthly fees.