This might have turned out fairly well, but you have just tons of compression artifacts killing the details. Your file size is only 16k, which also shows this is highly compressed. Check the settings in your image editor. You should be able to adjust the compression of JPEG files when you save them. Set the compression level to save as close to the limit for a challenge as you can, without going over.
beautifully composed and exposed, the touch of his hands on the glass is lovely. the only thing that really lets you down is the low resolution of your image.