I was going to stay off this thread as most of it has already been said, but I thought I'd just try to offer a few words on ELBs and Ash.
An ELB seems like it should be easy, but like most of bow making it's deceptive and easy to get lured into trying for too much draw weight from too short a bow. Some people have success with Ash but many have a lot of failures before getting it right.
Some of the best results seem to be with the grain running back to belly rather than across the back, also I think heat tempering of the belly and or trapping the back (or at least a squareish cross section) is required.
Personally I don't much like Ash, I find working it is hard on my elbows and it seems to take a lot of set.
Most of bow making is simply patience and getting your eye in so you can see slight errors in the curve before they accumulate. When in doubt stop, measure the thickness every few inches, but more important use your fingers and eyes. When in doubt stop think ask look feel walk away.
We all screw up... dunno if you saw my last ELB... gorgeous, then it folded in half... yeah I was down, felt like I'd been kicked in the guts, but I'm learning from it and making the repair.
At the end of the day, you only have to please yourself, it's not a competition, don't be too hard on yourself. Take a break, make some fun stuff, tie a couple of Hazel branches with their thicker ends together and put a string on 'em, mess about a bit try to get your feel and your eye in tune.
Once you get one good one you will wonder what the problem was! Trust me, it's mostly about eye, patience and knowing when to quit for the day.
Good luck
Del