That UV layout is really weak IMO. YOu are not using your (0,1) space efficently at all, and with only 512 X512 you need to make every pixel count. You can definatly cram in those UVs tighter.
One strategy of packing UVs is to cram them in the lower right or left hand side as tightly as possible and then scale them up to fit everywhere. Or just move them around like puzzle pieces until you get the best fit possible.
So, yeah. It is looking really good, and I wouldn’t want the texture resolution to stop you, because it is looking nice.





