Hi Damien, and welcome.
Housekeeping, first: Please place a meaningful location into your profile. If you check the message on the Portal Page, you would see that "Melbourne" is not acceptable.
The B&W conversion on the first is lacking ... something. Where are the blacks? They all seem to have retreated somewhere.
In both images, you have broken one of the traditional rules of composition, in that you have your subjects looking, or walking, out of the images. That may be exactly what you wanted, or the concept may be entirely foreign to you.
But I think that, in particular, the second image suffers greatly from this. You have great contrast, a wonderful concept, and I suspect it would be all the stronger an image were the feet seen to be heading into the image. As it is, in both images, the composition tends to lead the eyes out of the image, and IMHO they suffer as a result.