It's spelled fine, but the syntax is slightly awkward. How about "We will miss this time"?

However, I can see how, devoid of context, that could seem very different. If that doesn't suit you, you could substitute or elaborate, such as: "This is the time we'll remember" or "We'll miss this time later" or "Once it's gone, we will miss this" or something similar. Does that help?

Yes, thank you :)
Glad to hear that my sentence wasn't totally unusable.
You see, the teacher we have in photo manipulation is also english teacher. Therefore she expect that our sentences is correct.
Thank you for your help :)