What brands of flavors? I am guessing by the blueberry extra it's all TFA. The total flavoring seems a bit high in total, at least for me.
10% Strawberry
5% Green apple and blueberry extra (for another 10%)
2% cotton candy (EM)
You've got that Strawberry at almost at single flavor strength.
Also, while all those flavors are decent flavors in an of themselves (although I don't personally like TFA strawberry much or strawberry ripe. Cap Sweet strawberry or Inawera and FlavourArt Strawberry are far superior strawberry flavorings imho), I'm not sure that they mix together worth a damn in that proportion, especially as they blend and the flavor molecules interact.
I've never eaten or drank anything that has apple, blueberry, and strawberry all together, except maybe a fruit bowl. For that, I'd put the apple forward for the main note @ around say 8% and add in a couple small percents of "accent" flavors. A graham cracker, either CAP Graham Cracker or TFA Graham Cracker Clear would provide a nice "base" to tie it together. . . sorta fruit tart-ish. . maybe at 4 to 5% of the CAP or TFA.
If you want a strawberry-ish vape I'd drop the apple and add something creamy or vanilla or both (FA Vienna Cream? a touch of TFA Sweet Cream and Vanilla Swirl?), or going the other direction with a little acid (and not the acid in an apple), something like a sweet lemon, like FA or CAP Lemon Sicily. CAP Pineapple would pair well with Strawberry maybe or maybe FA Mandarin. Strawberry, almonds & cream have a strong flavor affinity. (Hey, that sounds like a good idea. . .)
Check out the FA mixes from HIC and others in the sub forum. Alot to be learned there, especially in mixing and what pairs with what. Also check out the FA flavor reviews.
One of the biggest failings in beginning mixing (I did it too when I started) is trying to throw everything including the kitchen sink into a mix and expecting it to taste like something. Keep it simple. Try mixing a couple single note flavors. Get the process down and learn the flavorings. Then work up a couple two note blends. Learn how they pair together. Progress from there, keeping in mind what flavor you are trying to create. A good reference in the kitchen and the mixing station is "The Flavor Bible" or a similar flavor pairing reference. Think like a bartender or chef.