Working with leather lacing - help! :)

[2canknot]

Hi all,  let me introduce myself alittle. I am retired due to movement disability and pretty much home bound. I have worked with Paracord for a few yrs making collars/leashes and halters etc.. I have gotten a bit bored with that and want to expand my work to include braided leather show leads and training leads.  I will use Kangaroo lacing with a cord for the show leads and have made one pretty much as a practice one with 3/32 size lacing.  I love working with it!  Was certainly a learning experience

Finally to my questions.  I have been told my one marker that all lacing should be beveled, well I tried and no way could I bevel the 3/32 and the picture shows the result of no beveling but did roll it.  I have since gotten 1/8 inch kangaroo and it looks like it should be beveled but I cannot manage that. So would like to get lots of advise on that or even a place I can buy it already beveled.  Next BIG issue is I suck at knots! The turkhead shown on the handle in picture is way too big and I really need a smoother transition,  help, guidence here would be awesome. 

Thank you for your help in advance.