Help producing and consolidating marketing materials

I need support with putting together a basic brand kit that I can utilise for my new business. I have a logo and a website (www.findingtheflex.com) and have begun the process of using Canva to produce infographics and marketing one pagers. What I would really like is someone to refine my somewhat amateurish designs (using the colours I already have from my logo and website) and put together a series of basic templates I can use in the future for newsletters, posters, social media posts etc. I also need to formulate a marketing strategy and am open to offers from people able to offer support with that.