Man you arn't kiddn about that!!! If you stopped and scratched your leg in the middle of the first stitch you better find a place to scratch every time!!! LOL
I work for Springfield Leather (upper right hand corner) and I teach a lot of people how to hand sew in a days time, we have ton of sewing machines , but man there is real satisfaction in having to say, "no its hand sewn"
The holes MUST be consistant weather drilled or punched ( I perfer punched the stitches tighten up as the leather shrinks back,) they should always be at the same angle and distance. The back not looking even will also be cause by your awl or drill bit not going through straight up and down, the thicker the leather the more it can deflect. But what ever you do I always start with the front stitch, once it is through it should be held down and away at a little bit of an angle which will let the back thread lay kind of on top and beside the lower thread, which ever direction you pulled the thread away, always pull it the same way. You must be very careful that everything happens the same dirrection every time, I know thats been said be it can't be said enuff!! hope this helps