@zoiDman as promised
The purpose of this approach is to garrantee you will like the taste of your first batch. So mix a batch of unflavored with the same percents of pg, vg, and nic as the pre mix flavor currently in your tank. Put a ml or two of the full flavored liquid in an empty dripper or dropper bottle and add an equal amount of your unflavored DIY. When your tank almost dry refill with the 50% diluted mix you just made. (There is no need to start with a clean coil since you are vaping the same flavor.) Give yourself time to get used to the reduced flavoring and you might like it better than the full strength original. If you like the reduced flavor recipe and can keep vaping it you've just reduced the cost of that flavor by 50% and proved you can mix successfully. Most likely all your pre mixes can be diluted. (25/75 may also work.) The next step is try some all-in-one flavorings. Add them in very very low percents and work your way up if necessary. Most recipes "fail" because there is too much flavoring. All in one's are easy and will be far less expensive than diluting pre mix. After that try recipies with complicated multiple flavorings, if you still feel the need.
The purpose of this approach is to garrantee you will like the taste of your first batch. So mix a batch of unflavored with the same percents of pg, vg, and nic as the pre mix flavor currently in your tank. Put a ml or two of the full flavored liquid in an empty dripper or dropper bottle and add an equal amount of your unflavored DIY. When your tank almost dry refill with the 50% diluted mix you just made. (There is no need to start with a clean coil since you are vaping the same flavor.) Give yourself time to get used to the reduced flavoring and you might like it better than the full strength original. If you like the reduced flavor recipe and can keep vaping it you've just reduced the cost of that flavor by 50% and proved you can mix successfully. Most likely all your pre mixes can be diluted. (25/75 may also work.) The next step is try some all-in-one flavorings. Add them in very very low percents and work your way up if necessary. Most recipes "fail" because there is too much flavoring. All in one's are easy and will be far less expensive than diluting pre mix. After that try recipies with complicated multiple flavorings, if you still feel the need.