More effort required
I think that you've got a decent concept here, but the whole image of the piece is knocked due to a very rushed look to it all, where you're cutting corners, in your over-eagerness to publish this work, no doubt.
Take your time with the drawing - filling the background for the sky and the floor is simple, then you can draw the clouds on in white and fill them the same, thus giving you a practical, serviceable and relatively usable background. The same could be done with the sun, just to get something different in the piece. Maybe even make those clouds a light shade of grey, so they don't clash with the shirt.
Is it a black short, or a jacket? Perhaps some differentiation is needed, with the buttons being on show and a discenible join down the front. Shirts have this covered by the tie, so I might be able to let you off. Someone as posh as Mr. Monocle would have his collar buttoned up to the top, so do that, for effect. Make the monocle bigger, to get more of an impression, as it is supposed to be the focal detail. Perhaps a gold chain that links to his lapel button hole, for example, again for effect, but something so simple would have a nice effect.
With the way that you've I've given this picture a cursory once over, you've got a few glaring issues that need to be attended to. People will be much more receptive of your works when you make an effort, trust me.
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