First, get the address of your delegate.
- Browse to the contract on Etherscan.
- Expand delegates.
- Paste your address in the text field and click Query.
- The response is the address of your delegate, copy it.
Then, to get the delegate's snapshot votes:
- Browse here.
- Paste the delegate's address in the URL after the https://snapshot.org/#/profile/
- See the snapshot votes in which the delegate participated (both for Optimism and other votes).