WIP Fighting Costume Knuckles

Sorry for the lack of art guys, but these days I haven't felt very well  I have a very annoying sore throat combined with coughing and sneezing. Plus I have lose my appetite and headaches are killing me

Anyways, here I got something to show you and I want to improve.

I designed a while ago this Knuckles fighting costume inspired in boxing. (that's why the shoes and gloves are like that). 
Plus I gave him a scarf and put him on his classic sunglasses B) 

If you could help me telling what I should add, or the color scheme of the design, I would be grateful

Soon decent and finished arts, as soon as I get better  

Knuckles (c) SEGA
Design and art (c) ME!