Need y’all help

So ladies prom is this Saturday where I live. I got this PERFECT dress that I absolutely love. The problem is that I need to get my eyebrows done and get some fake nails but I totally do not want to ask my parents for more money because they worked sooo hard to get me that dress. Any recommendations of how I can self do my eyebrows and do y’all know if the Walmart fake nails work? Any comment is appreciated