I think we all, or almost all, fail checks from time to time- I certainly have and I am not ashamed to admit it- and more than once! I haven't killed anyone yet, and neither have you. You sound as though you are doing it all with minimum experience or great lack of ongoing experience. You just have to put it behind you and thrash away and do your best. You are not going to stumble and drop out having come this far- you've already done 98% of it- just persevere and don't get disheartened. This is what you've set your heart on- just do what needs doing and you will get it.