So glad to see you here
.
Can I help you improve your TV drawing? Perhaps. When I want something drawn, and I want it done quick, here's how I do it:

Cartoony
.
I've done this all in MSPaint seeing as you've used it too.
First step you've mostly got. Jump into your line tool settings, select the third width setting, select the boxy thing with curvy corners, and draw the TV and it's screen. Then, switch to circle tool, draw one small circle, copy it and paste it 3 times underneath. You might want to use the magnifying glass to zoom in here. Then, hit the sharp cornered box thingo tool, draw a small rectangle. Last step, draw a small circle up top, then grab the line tool and put 2 lines going to it.
This is your basic outline.
Second step: Double click on any colour and change it to a mid saturation purple. Fill. Grab another and change to mid saturation brown. Fill. Repeat for rest of image.
Third step: Double click all your custom colours and adjust the brightness to make highlight or shadow. Then use a circle tool for the screen, knobs and antenna bobble and a line tool for the case and button. I like to break the lines on the case up a bit.
There you go - a television set, quick, easy, and in MSPaint.
If you're looking to use the Gimp to make something a bit flashier, let me know
.
EDIT: Just for notes, this took me less than 10 minutes. Not the flashest looking machine, but it's quick and easy.

Can I help you improve your TV drawing? Perhaps. When I want something drawn, and I want it done quick, here's how I do it:
Cartoony

I've done this all in MSPaint seeing as you've used it too.
First step you've mostly got. Jump into your line tool settings, select the third width setting, select the boxy thing with curvy corners, and draw the TV and it's screen. Then, switch to circle tool, draw one small circle, copy it and paste it 3 times underneath. You might want to use the magnifying glass to zoom in here. Then, hit the sharp cornered box thingo tool, draw a small rectangle. Last step, draw a small circle up top, then grab the line tool and put 2 lines going to it.
This is your basic outline.
Second step: Double click on any colour and change it to a mid saturation purple. Fill. Grab another and change to mid saturation brown. Fill. Repeat for rest of image.
Third step: Double click all your custom colours and adjust the brightness to make highlight or shadow. Then use a circle tool for the screen, knobs and antenna bobble and a line tool for the case and button. I like to break the lines on the case up a bit.
There you go - a television set, quick, easy, and in MSPaint.
If you're looking to use the Gimp to make something a bit flashier, let me know

EDIT: Just for notes, this took me less than 10 minutes. Not the flashest looking machine, but it's quick and easy.