Damn I wish we could still upload images without having to host them somewhere, I'm gonna mess up my explanations if I can't draw them... Ah, well.
I don't think there's anything wrong per se, especially once there'll be the dialogues to clear everything up. I do agree with @digitalvalium1 though, about the background character. I didn't see her at first and then when she "poped up" in the fifth panel, I was really wondering where she was coming from and had to go back. Maybe you could add some action lines on her btw, so that it's obvious that she just brutally intruded on the conversation from behind.
Now for general advice, I'd say that you should definitely vary your angles more.
There are 5 panels and only 2 different angles and scales. If you want to create the surprise (of the girl intruding), maybe you could make a real close up on strawhat on panel 4 so that the scale is really different from panel 5 while masking the rest of the scene, then change the angle so that it's obvious that she's intruding between the two (it also seems weird that none of them seem surprised - especially the fact that Strawhat doesn't even spare her a glance - but as I don't have the dialogues, I can't say if it's a bad thing. Though you could emphasize her intrusion by changing Strawhat's pose as if she was pushing his shoulder with her arm or something. Also he should probably be a bit smaller because of perspective, he seems really big compared to her.)
As for the first three, you could vary the angle there too (for example, a shot with the background girl in close up, but in the shadows so the eye is attracted to the two in the background (and in the light) and we see that she's still looking at them in the corner of her eyes.
One last thing, I'd advice avoiding having those 4 panels the exact same size because it can get really confusing for the reader ("should I read the panel on the right or the one underneath ?"). Here though, it's ok because you placed the speech balloons fairly well but if you want to make the reading really fluid, you should move the 3rd speech balloon right in the middle of the first 2 panels so that there isn't any confusion for the reader's eye.
ANYWAY. That was just general advice, I wouldn't change much (if anything) if I were you, your characters look really great, I love their design and expressions, and your colors are awesome !
ps : sorry if that wasn't clear, english is not my mother tongue...