Climbing

I've recently picked up climbing as a hobby (3 weeks ago) and I'm struggling to do the majority of the V3s that I attempt. I'm able to do V1s and V2s pretty easily, but there are specific techniques or tricks in V3s that I guess I haven't picked up yet (e.g. crimping, heel hooks, dynos).

Do you folks have any suggestions or routines on how to improve and progress? How was your first experience with climbing?

Edit: Thanks a ton for the advice! It seems I've been spoiled by my progression from v0-v2, so I was expecting v3 to take a similar amount of time. It seems that I'll need to think a lot more about these problems!