+1 for what zoiDman said.....
Things I have learned about DIY
Use ml for measurement not drops, to be able to replicate recipes.
Steeping makes a difference in the final
e-liquid flavor (1-2 weeks)
make small (3ml)bottles for the 1st try at a new flavor..skip the nicotine untill you perfect your recipe.
DIY isn't cheap to start with!!!You will always find a recipe that sounds great but you're missing that one flavor to make it.
Try to
buy in bulk and find someone to split it with..saves on flavor and shipping costs.
My favorite vendor for most DIY is OneStopDIY ie., measuring equipment & TFA flavors and great service!
e-cig express for Flavour Art flavorings