Hi Grass!
The dragon fusion is fine, we do think Lucina's dragons scales need to be worked on to look like it's a part of her dress and not something like an accessory. We're also confused on the scarf tips that are unattached?
The only issue we have with Chrom is his dress situation. Since the crystals on his waist aren't really providing us much on their purpose in line with him being a Dark fusion. Similar to Lucina, if those crystals were more coherent to Chrom's dress, it should work out :0c