@Mimi-Simon Wow! Just wow!!! 


your work is so beautiful. This is definitely a professional portfolio. Everything is of high quality.
There's nothing wrong about your work. It's beautiful! however, now this is just purely my speculation please feel free to disregard, I believe your style is too similar to the one that's oversaturating the market right now. Why should agents hire you when they probably already have someone who makes the same work you do?
You need to stand out. it could be by changing the way your apply color, or the way you use texture, or the way you draw characters, etc. You need to distinguish yourself from the crowd.
I'm telling you this because I also had the same experience after I left my previous agent. After leaving said agent, I tried submitting to other agencies but I received the same reply: "we love your work but you're not what we're looking for right now". I didn't know what I was doing wrong. I followed other people's advice, I know I make good enough work, but I was still getting rejected left and right. It took me some months to realize that it was because my style looked generic, too similar to everybody else (most of them anyways). Why should they hire me when they already have artists making the same work as me?
So I tweaked my style and long story short, I landed my current agent. I literally just signed our contract a little while ago.
I may be right, I may be wrong too, but I wish someone had told me beforehand so that I could take it into consideration. I wish someone was this blunt to me before I spent months wallowing in self pity and confusion. but at the end of the day, it's up you if you take this advice or not. A word of caution tho, I've been wrong A LOT of times. lolz 



I hope this was helpful. I hope I wasn't discouraging or offending. I sincerely wish you all the best. I can sense that you'll do great in the future. Again, I LOVE your work. Keep making art and submitting to them agents.