I watched your two latest videos, I actually quite like the background you have going on at the moment it looks pretty cool.
Heres what I think:
If you can, make sure your camera is either directly infront or just above your eyeline, so you're not looking down at the camera, I can't really tell if thats whats going on but, yeah!
Also, Try to make your titles more specific, Mention what you are reviewing in your title, also try and split the reviews into specific types of items (like, makeup in one video ect)
I like your banner / icon!
I also like the simple thumbnail you have on your second video (the one from 7 months ago)
Other than that, I think you have a good personality for YouTube, I enjoyed watching your videos and I subbed! I hope to see more stuff from you

!