At this early stage in my BARness, I'm not yet feeling capable enough to try and design my own. I'm still getting a lot of enjoyment out of building premade kits.
i got my first RTF (an estes tidal wave) when i was 12... within two weeks had my first scratch built
ok, so the balsa grain was parallel the bt, the NC was from a foam airplane and not totally round, i rolled the bt out of paper (and launch lug as well).... but it flew, and it was repairable! i still have it, don't like to launch it much tho. almost every time something else gives out.
its amazing to see how much i've learned in only a few years since my first rockets.... and there's still so much more out there!!!
any way so the point of all this blabber is that there is no reason to be 'afraid' to scratch build... i still put together old parts laying around in the workshop without checking the stability from time to time, just to make sure that i can still 'duck and doge' like i could when i started and had to do that relatively frequently