Since your stuck with Doodle at lvl one only 3 slot this.
Pick up Drawing ASAP you can get it at lvl 4, 6 slot it.
Since Drawing is end heavy you will need to put at least 2-3 EndRdx; and I recommend 3 ToHit debufs. You will get a lot of agro, but it is well worth it. You will need this when combined with 3D art at lvl 20. 6 slot Photoshop too.
3 slot Talent, nothing you can do since they nerfed it in ED. Oh the days when you could of 6 slot this for damage...
Fitness pool is optional, but I still recommend it.
DO not take Super Speed and HASTEN, you can not rush it. Hard work is what will get you there unless you want to rest a lot...
Anyone will tell you the payoff is all worth it for Studio at lvl38
Note: You will burn a lot of Inspirations more so then any other build.
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Thanks to all the Artist on the forum. You have inspired me.