Ok let's take Wildan's build as an example; this is how I would distribute the skill points:
http://underrail.info.tm/build/?AwGloJgVhBmOQEZQDYGJm8YdUU2GKeFAFhFPO1NEWR1nmVsIpkVZZlpggE448WGlIQK8UmigB2ECnwoSmABwhp+ZbWDAgAMax the following every level, no exception:
Dodge => stop at 51 Base skill
Evasion
Stealth => stop at 53 Base
Hacking => stop at 64 Base
Lockpicking => stop at 44 Base
Thought Control
Psychokinesis => stop at 45 Base
Metathermics
Once you have spare skill points left over you would start pumping them into a new skill, in this order:
Intimidation
Tailoring => stop at 100 Base
Mechanics => stop at 40 Base
Biology => stop at 33 Base
Electronics => stop at 110 Base
If you want to craft a psi beetle carapace tactical vest early, you can take points from Evasion/Intimidation and pump them into Tailoring/Biology/Mechanics. You can make those points up in your later levels. However with a mechanics this low you will need to hunt for a very low quality Laminated Fabric Ballistic Panel.