Replying to Bring it to park

Last season i brought a lot of new things to snow, but this season I plan on advancing a lot. However there is one problem, I dread the fact of trying the new things im learning on a genuine park jump rather than a amateur/slap shit made jump. For example, for a year i would only do backflips on kicky jumps made by me and my friends and im way to scared to bring these and front flips to park. Should i just go for it, or should i get really experienced with them out of park and then bring them to park. How did you get over this fear?