Have fun by all means especially on yourself (as that is where most coloured powders end up ... on YOU ... not on your clients).
Sorry, I do not mean to burst your bubble but apart from simple applications like coloured tips, most clients do not want permanent coloured applications and most won't pay you the extra they should be paying you to do it.
Pretty to look at, fun to do, but nail art is
not the core of many nail businesses in the UK unless you have marketed yourself
very successfully to that niche of clients who like it.
Ask MOST working nail technicians for a really
honest answer and they will tell you that their coloured powders sit on their shelves gathering dust most of the time ... probably why someone off loaded them onto you ... because they were not using them.
Peeps complain about the cost of nail products and then spend wildly on stuff they will hardly ever use and which brings them no return on the money they have spent.
FAR BETTER to invest money in good retail products that will earn extra revenue for your business ... that is why we are in business.