>>333259241
>When you have absolutely no knowledge like me 
This was me 2 weeks ago. All I did was look up a bunch of tutorials and play around with the files I already had, which then turned into a cute avatar. 
If the booth creator was kind enough they probably included either little tutorials on how to edit things or PS files with reasonable names/layers. 
What are you planning on changing about your model? 
Editing in blender is surprisingly easy once you get the hang of it, just remember that the hierarchical system exists for each object and it's v important if you want everything to move together. 
Good luck and don't give up on it even if you feel like killing yourself lmao