Here is the Orange Creamsickle recipe:
TFA Orange Cream 9%
TFA Vanilla Swirl 4%
FW Vanilla Custard 2%
TFA Ethyl Maltol 5%
TFA Sweet Orange 7%
Now then you have to understand that flavorings are not extracts, that is to say that they are the building blocks to construct what we taste as a flavor.
Here is an example to help you understand flavorings:
A baker is making a simple yellow cake mix, but wants a little mocha flavor so he / she adds a small amount of mocha flavoring..tada Mocha flavored cake, but...you have to understand you just added a flavor to an existing mixture of components that gives you a "cake" flavor...already sweet, and ready to eat...see my point?
Any given flavor will not usually yield a palatable taste just on its own, it takes added components, such as sweeteners (Ethyl Maltol is sort of a Cotton Candy flavor), or for instance "Sweet Flavor".
Orange Cream added to VG and PG and Nicotine will be very bland when vaped.
Nicotine is bitter.
VG is slightly sweet.
PG is fairly neutral.
Depending on your mixing ratios, and nicotine percentage one particular flavor will usually need "something" added to actually yield that perceived or palatable taste of the base flavor.
If you want to try staying pure with the Orange Cream flavor I would add some vanilla and some sweetener to the mix for starters...
Perhaps Bill could suggest some starting percentages to help you along and not waste too much?