"把刀口朝前地" can be translated into English as "with the blade facing forward" or "holding the knife with the blade pointing ahead", depending on the context and the level of specificity needed.
"With the blade facing forward" is concise and commonly used in contexts where the action of holding or positioning a knife is being described.
"Holding the knife with the blade pointing ahead" provides a bit more detail and is useful when emphasizing the specific way the knife is being held.