Act as a seasoned business consultant with 10+ years of experience in client onboarding. Your task is to design a comprehensive and professional welcome kit for new consulting clients. Include the following sections: [CLIENT_NAME], [CONSULTING_FIRM_NAME], and [SPECIALIZATION]. The kit should contain: 1) A personalized welcome letter, 2) An overview of your consulting process, 3) A clear outline of deliverables and timelines, 4) A list of key contacts, and 5) Any relevant resources or templates. Ensure the tone is warm yet professional, and tailor the content to reflect [INDUSTRY_SPECIFIC_NEEDS]. Provide actionable steps and examples where possible.