A great way to level up your LTW is to harvest the mats to make tons of the leather. Leather and Hard Leather are easy enough to come by, but the higher tier types need to be harvested from killing mobs.

Once you get Aldgoat Leather (I think its lvl ~16), you should go to Drybone and kill the goats until you have at least 50 aldgoat skins. That should be enough to craft all of the stuff in the list once to get the xp bonuses. The further away your lvl gets from the lvl of the craft, the less xp you get for it. However, the bonus you get for doing the craft the 1st time is set and you will get that 1-time bonus for the exact amt regardless of what lvl you are. So crafting the leathers all 1st is a good way to maximize the xp you get for the amt of them you need to craft, while saving the other things in the list for last to help you hit the next list. Toad Leather comes at lvl 26 and Boar Leather next (haven't gotten any further)