Lost emerald

Those days i founded rountufox on dA,i saw his nice drawings with nice style of colors and backgrounds....And i feel liked to draw something like this.Fast idea,i don't know why Knuckles trying to find the emerald...I think it was because i was seeing a Knuckles comic or something.
Also i think i made Tails too big and Sonic too little....Sorry
_{Knuckles/Tails/Sonic (c) SEGA}