A few words on Blender
It's reasonable start. As an image, it's pretty low quality. But the main problem isn't creativity, it's that you aren't familiar with Blender. So here are some Blender-related comments.
First, I can see the polygons in the "indents" on the left & right sides of the processor. To fix that, use "Set Smooth" in the Editing window (F9 or the button with the square + four dots). Note that this will make the sharp corners smooth, too, which you don't want; but you can avoid that by pressing "Use AutoSmooth" in the same window. There are other workarounds, but this is the simplest.
Second, I see that the yellow dots are actually part of a texture (presumably built in gimp) and in the Shading (F5) window under "Map To", you set the texture to modify "Col" (color) and "Nor" (the normal map). That's not a *bad* way to do this. However, if you are going to do it, you *need* to make the texture a much higher resolution in Gimp. The pixelation in the texture image is showing up on your model, and it's really a drag on the object's quality.
Third (and I give this advice to everyone), learn how to bevel. It adds an extra bit of realism. You may want to hold off on that, and prioritize learning other elements of Blender, but make sure "beveling" stays on your to-do list.
Finally, I've fiddled with Blender for years. Let me tell you how I, with my experience, would model those yellow dots. I would make an Object which represents one yellow dot (call it the Dot object). I would add a Square mesh, then subdivide it several times so it becomes a grid of points, probably 32 or 64 on a side (call this the Grid object). Next, (rather advanced) you set the Grid object to be the "parent" of the Dot object. Do this by selecting the Dot, then shift-selecting the Grid (the Grid should be brighter pink than the Dot), and hitting Ctrl-P --> "Make Parent". Then, under the Object window (F7 or the button with the three black arrows), click "DupliVerts". Bang, it's like magic. Try it and play around with it, as DupliVerts is one of Blender's more powerful tools.