Let me ask some questions first.
Where's your portfolio doing this service previously on other platform or so? And why people should trust a new comer with such a confidential task?
There are already trusted service/s with such kind, why people should choose you instead of those.
I don't have portfolio on other platforms. Previously I worked with people offline. Trust is the thing that may be deserved only with time. So, portfolio may appear here in this thread with time if someone would deal with me and then leave a review - that could be an only real proof.
Usually I don’t need a wallet file itself, only hash. There are risks only on my side, not the customer’s.
Of course, there are other services and everyone is free to choose which service to use. Most of these services won’t take less than 20% as a fee or even won’t take to work wallet file with “small” balance. I have a flexible cooperation conditions and individual approach.