Hello again, Emi, but once again, greater job on your reptiles to birds. I think they you are all on the right track of all of those but the signature style needs more looser lines of action and rhythm. Would you like to go for 40 minutes of 60 second sketches of those creature sketches?
The reason why you could do this constructive critique is because you can make your signature drawing style of animal forms less stiffer, yet to make them more expressive, appealing, and more like they appear to move. Either way, your style is very unique thus far, but for more info, look into the Ken Hultgren Animal drawing book, link
right heeere.
'Hope these have helped you out even more.