I'm just going to rattle off my thoughts, hope you dont mind.
I feel there's too much white in the leaflet. Is that what you want?
If you are going to pay someone else to print the leaflets for you, and paying for a colour version in this case, maybe should include more colourful pictures or up the saturation of the drinks pic at least . The salad has too much white in it too, imho. Try to capture more green and red bits and less of the salad dressing.
The hotdog pic is the only one which has some colour in it to give the leaflet more punch.
The hotdog pic however does not blend in well with the rest of the pics as its more warm toned. Whereas the other pics, except for the night pic, are cool toned. It looks like you are going for an overall pastel colour and kawaii theme for this leaflet. Maybe a pic of icecream (pinks and yellows) can come in useful as well, assuming you have icecream on your menu.
But then, a pastel kawaii theme leaflet is only good if your target customers are mostly young ladies
Think about it.
And I cant seem to find your outlet's opening hours, business days and telephone number.
Hope this helps, otherwise just ignore my ramblings