Thanks for the advice! That is very helpful. In my conceptualization of the process, I've come across another problem though... Instead of a single center piece, I want to form it from two pieces of probably 4oz veg tan and have it as a central laptop compartment (pictured here). Additionally, I want to line that laptop compartment with wool felt, unfortunately adding to the thickness. This would mean that I will be sewing 2 gussets, 2 middle pieces and 2 layers of wool together, which I am picturing to be VERY thick. I am weary about skiving from the leather center piece or the gussets, because I want the bag to last. Any thoughts on this process? Thanks.