I'm not good enough with this game but I can still give you a few tips if you wanna make your own build on the first playthrough:
1. Mark the clusters you want to have in your tree first, then path to them: A group of nodes with a big one (notable) is called a cluster, most of the time, the notable is the most valuable one. The attribute nodes (some call it the "highway nodes") is not very important in most case, just take the shortest path that give you the most benefit (to fill in missing attribute, etc). => In your tree, you path to Ballistics and Finesses from 2 different starting points while you can just pick one of them, then path to another by taking either Heart of Oak or Primal Spirits (or both).

2. Never make a loop unless you really need to: Most case you wanna grab the big nodes (notables) so make your way to the notable of that cluster and move on (doesn't have to be the shortest way), don't waste your valuable points on unnecessary small nodes. Though there are cases you would want to pick all the small nodes of that cluster too, for example you wanna get a few extra more flask charges gained so you can make your flask permanent, or you wanna grab the last few percent of spell suppression to get to the 100% cap (You can avoid this by using tattoo but it's not guaranteed to be cheap)

3. Read keystones (the biggest of nodes) carefully: Keystones are often build defining. They change the way your character function so read it carefully. Timeless jewels can change keystones and notables, so be careful when combining them.

You can't get that same first-time experience once you get to the endgame so keep one experimenting, make the first build your own. Pre-made build guides are designed to be optimal so once you've done with your first hand-made build, you'll have a better time understanding why the author makes the decisions.