Get a reloading block . They are cheap , less than $10 and made of plastic . Put the cases in there after adding the powder charge . Then use a flashlight to verify each case has powder and no double charges . Then seat and crimp the bullet .
Reloading is fun and you just need to take your time and use good common sense . NO beer drinking while reloading and no distractions -- it's just that simple . I have reloading many thousands 38spl using the kit that you have . Have fun , Regards, Paul