Hiya,
I charge £2 min per nail, rhinestones 25p and £10 for both hands, slightly less if its really easy or simple, whether they want it on their natural nails or enhancements. Some do get both hands done but alot of peole just like it on thier little fingers i find the more i wear it the more i get asked for it! I also do a mini manicure & nail art for kids under 12 years, for a £5 thats really popular! I dont do airbrushing anymore so can't help u there ( i think it used to be about £8 upwards, depending on design, how many colours etc)