Sometimes picking a frame and a matte is harder than taking the photo. So much variety. In enlarging a photo, first understand that there are different qualities to your enlargements. A standard print today, most likely is printed using “printer ink”. And today, it’s probably just Injected onto your print precisely.
From this you could go to custom work, which is the best type of printing you can do, if you ever want to just save your photo. You can have your print done on a “canvas material”, and also “museum print” or something equivalent.
When you pick a matte and frame, there are two schools of thought to this. I know, for consistency, a lot of photographers will just pick a white matte board, and then a black or white metal frame. And that looks ok. See below:
Matting and framing color photos:
I found the perfect video describing how to pick mattes and frames. Just click the link below: