Is this good?

isn't the Mũi tên xanh a bit too,.. Straight across? It's normally thêm in the right side. I think.

Unless you're trying to make it different. Different Is good
.

It's great so far! Really! But, and I'm just offering honest Lời khuyên here, I think bạn could make the inner vòng tròn thêm circular instead of oval-ish. Then bạn could, also, tip the Mũi tên xanh a little thêm to the left instead of straight across. But other than that, it's good!