Nice work, it has some special touch, I don't know what it is. Background fits nice and the idea is good, there are just few flaws in execution.
- The donor parts, just as rims and engine is low quality, so that's gives it a bad look, so in future, try to find better quality donors.
- The green color is a bit oversaturated and it could use some more lightening and shadows, just to look more realistic.
- The rims look a bit off, try to rotate them next time so it stand more straight. Look on the donor pictures and try to ''copy'' the stance of the rims.
Don't take the comments as a negative, I'm just giving you some comments how to improve your work so you will become better soon
