I have no problem admitting that I am not very good at doing practical things like sewing or painting or such and that's usually where my DIY-projects fall on. I try to learn but a talent for handycraft is not something you learn.
Here is however a tip on how to make your own garden apron from an old pair of jeans that even I could do! Just a pair of scissors required and it looks good! I'm not working that much in the garden but this would work perfectly for dog treats as well when training agility.
If you are good at doing things yourself check out the beatiful mess blog, Kanelstrand and Hannas virrvarr. (last one in Swedish)