Firstly, congratulations on writing your own spell! 
Writing spells is one of my favorite things to do - something about the creative process and solving a problem is just so satisfying!
Everyone here has already given you some great advice! The only other thing I’d add is to figure out how you want to cast your spell. Do you want to create a charm or bag to carry with you? Do you want to create an amulet, as @dawn suggested? How about a spell oil to use before needing those communication skills? Or just a candle spell to help you quickly at the moment?
These are all questions I think should be answered because the method of casting the spell can have an effect on how the spell works. For example, creating a spell jar or bag that you carry with you can be recharged every month using the same spell. However, a candle spell that you do quickly may only last a short amount of time.
There’s an older post around here that might help you with your spell crafting!
