SO where you stuck? complete your profile till 100% , then on availibilty badge , send cover letter on most relevent job in your niche, maximum 3 per day, then after 1 month analysis your coverletters ,either client comes in inbox or you close any client , that was your best one , use them with consistancly for getting results, in 2, or 3 month buy membership of upwork which is $20 , it will help you to getting show professional in your niche... hope it helps you