Hi
Extending the nail without using a form, straight onto the skin can cause a sensitivity to "acrylic" products.... im sure if this is the only time you have done it ,you should be fine but if you carry on doing it over a period of time you will make yourself allergic to the products !! Which means you wont be able to wear enhancements.I have always been taught that product should never touch the skin !
Im sure there is a tutorial or something on this site about extending a nail without forms but im sure you should put oil on the skin first to act as a barrier ,
I will see if i can find it and post a link ...
Another option is you can always tailor your sculpting forms to fit the nail your extending next time you have ago.
Hope this helps and they do look very nice for your first try
Hazel