Business plan, marketing strategy, financial feasibility/model

I have completed my business plan with all my market research and marketing strategy. I would like to have it fine tuned and add the financial projections to it. The business plan is for an app that I have developed to clients with tattoo artists. The financial model and marketing strategy should reflect similar gig economy apps for projected growth and marketing as well as take into account the tattoo industry , market share and competition which there is very little to speak of; as well as considering marketing strategy factors like google and instagram ads and ROI for those ads. As part of the marketing strategy we will be holding contests and give aways on instagram to boost app downloads and sign ups. The success of this app depends on both clients and tattoo artists signing up so there needs to be marketing and growth projects based on both. Apps like fash, takl, Angie, and thumbtack would be good comparisons. This business plan will be used to apply for loans and pitch investors, so all aspects must be meticulously thought out