Hi Holly,
I love that you are tackling painting with the view of subject diversity. But do not be afraid of spending some time on them. I don't think any one of them are off on a wrong foot, but many look a bit unfinished, less completed than they could be.
For example.. the Lemons in the glass dish. Proportions aside, you have paid attention to the light refraction on the glass, which gives depth and life to that element, but let the lemons themselves or the book the glass is on flat and without the same level of attention to their dimensions. Many works of art, even for fast painters, take days sometimes months to complete to true satisfaction. Oils are a fantastic medium for this too as their set time is slower, and allows for manipulation and variance of hues. Capitalize on this, you have a good eye for shape and a clear passion for the art. Training can be substituted for patience and practice.. but don't try to rush it..
