Reddit mentions of Newplast Modelling Clay - Plasticine Alternative (01 White) by Newplast

You should try to make it smoother, maybe animate a t 24 frames per second instead of 5. Also try to get a tripod for your phone/camera and also try to to get/make a better set for your puppets. I also see that you were using dinosaur figurines, try to use an armature metal skeleton with clay on the top to get a better result.

Here are some links you should look at:

Clay: https://www.amazon.co.uk/Newplast-Modelling-Clay-Plasticine-Alternative/dp/B01MTL338N

Armature: https://kineticarmatures.com

Tripod: https://www.amazon.co.uk/Ailun-Compact-Compatible-s10plus-Cellphone-Black/dp/B01N6713N8/ref=sr_1_6?keywords=Tripod+for+phone&qid=1567945166&s=gateway&sr=8-6

best stopmotion software: https://www.dragonframe.com

If you follow my tips you WILL become one of the best stopmotion animatures in the world.

Hope I helped;)