Please assist me with my model, keeping in mind that I am an absolute beginner still. I appreciate your help. From the blender file view and MakerBot view, it looks normal. But when I try to click on the preview to see how it would look printed. It looks all hollowed. I would appreciate it, and need to know if I were to print would it look like that? or is there something that I need to change from my blender model.
Do you mind if I ask where the model came from?
It looks like it needs a lot of work before it’s ready for printing!
I downloaded a picture and sort of worked around it by joining vertices and faces. I then extruded it outwards to make it 3d. This is my blender file Link
I’d make a start by looking up “Manifold Mesh” (Basically it means an enclosed volume)
I haven’t had the chance to look at the file (Not at home) but you will need plenty of planning to create a 3D print this way, to ensure your model will come out in a printable state.
Try this - Do you know how to activate Add-Ons in Blender? There’s a 3D Print Tools Add On that comes with it. It can tell you where there are problems with the model.
I do not know where exactly that is, but I could research. Thank you very much for the help.
I checked the file and there is plenty of things that will not be good when printing, like small holes many overlapping faces. There is a lot of useless geometry that wont be printed and its making a mess in the geometry, solidify is needed but that function isn’t bullet proof, with so many pieces it makes a lot of mistakes, I tried to solidify in meshmixer and the model just collapsed 
Also the Ngon faces aren’t helpful. The picture you see in printer is because the printer don’t know what to do with some intersections.